®l)e  €omtnonioealtf)  of  Massachusetts. 


BOARD  OF  GAS  AND  ELECTRIC  LIGHT  COMMISSIONERS. 


REPORT 


OF  AN 

Investigation  Relative  to  Establishing 
a  Calokific  Standard  foe  Gas. 


Under  Chapter  167,  General  Acts  of  1916. 


By  Charles  D.  Jenkins,  Inspector  of  Gas. 


BOSTON: 

WRIGHT  &  POTTER  PRINTING  CO.,  STATE  PRINTERS, 
32  DERNE  STREET. 

1917. 


Publication  of  this  Document 

APPROVED  BY  THE 

Supervisor  of  Administration. 


I 


i 

I 

i 


GG&7 

[^3^3  ns 


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®l v  ^mmonrocaltf)  of  ittassadjusete. 


EEPOET  OF  AN  INVESTIGATION  EELAT1VE  TO  ESTAB¬ 
LISHING  A  CALOEIFIC  STANDAEI)  FOE  GAS. 

r  - 

'  Board  of  Gas  and  Electric  £ ight  Commissioners. 

Gentlemen:  — In  compliance  with  your  instructions  I  have 
the  honor  to  submit  a  report  on  the  work  of  my  department 
relative  to  the  establishment  of  a  calorific  standard  for  the  gas 
of  the  companies  under  your  supervision. 

As  a  preliminary  to  the  main  body  of  this  report  it  may  be 
proper  and  well  to  say  that,  due  to  much  research  the  conclu¬ 
sion  has  been  reached  throughout  the  scientific  world  that  in 
the  interest  of  consumer  and  producer  the  calorific  standard 
and  not  the  candle-power  standard,  should  prevail  and  does 
prevail.  The  reason  for  this  change  of  standard  is,  briefly,  that 
the  great  bulk  of  the  gas  now  used  is  for  heat  purposes,  and 
obviously  it  is  of  prime  importance  to  the  consumer  that  he 
be  supplied  with  a  gas  which  will  give  him  the  best  service  in 
view  of  the  use  he  makes  of  it. 


Nineteen  plants  were  designated  by  the  Board  for  experi¬ 
mental  purposes,  a  list  of  which  with  a  description  of  their 
equipment  appears  in  Appendix  A.  These  nineteen  plants  were 
ree  to  undertake  the  manufacture  of  gas  to  a  calorific  basis 
instead  of  a  candle-power  basis,  but  otherwise  complying  with 
all  the  legal  requirements. 


The  experimental  period  was  for  six  months,  and  has  been 
extended  from  time  to  time  and  is  still  in  force. 

The  various  plants  were  to  make  daily  tests  and  report 
weekly  the  average  calorific  value  and  candle  power,  with  a 
is  ory  of  the  gas,  its  analysis,  quantities  made,  analyses  of 


4 


raw  materials  and  such  other  information  as  would  have  a  bear¬ 
ing  on  its  quality.  As  a  check  on  this  work  the  State  inspectors 
were  to  make  their  usual  routine  tests  unannounced  and  at  ir¬ 
regular  intervals,  a  comparison  of  these  single  tests  being  made 
with  the  company  reports  for  the  week.  On  consultation  with 
the  inspectors  modifications  were  to  be  made  and  experiments 
carried  on  in  a  spirit  of  co-operation,  endeavoring  always  to 
improve  the  efficiency  of  the  gas  service. 

Calorimeters. 

For  the  determination  of  calorific  value  a  water-flow  type  of 
calorimeter  wras  used,  the  Hinman- Junker  being  quite  generally 
installed  at  both  the  official  testing  stations  and  works  stations. 
The  British  thermal  unit  adopted  in  the  law  is  the  quantity  of 
heat  required  to  raise  the  temperature  of  1  pound,  avoirdu¬ 
pois,  of  water  1  degree  Fahrenheit.  The  science  of  gas  cal¬ 
orimetry,  however,  was  developed  in  the  laboratory  and  metric 
measurements  used,  the  unit  being  the  “Calorie,”  which  is  the 
quantity  of  heat  required  to  raise  1  kilogram  of  water  1  degree 
Centigrade;  this  unit  is  still  in  use  in  France  and  other 
countries. 

At  the  testing  stations  the  gas  supply  was  taken  off  exactly 
as  for  candle-power  determinations;  in  fact,  some  of  the  calor¬ 
imeter  gas  supplies  were  extensions  of  the  photometer  supplies. 
At  the  works  testing  stations  many  plants  used  averaging 
tanks  either  of  the  continuous-flow  type  or  of  the  gas-holder 
type,  and  they  have  been  found  to  give  satisfactory  results. 

For  the  official  testing  stations  it  was  necessary  that  the  in¬ 
spectors  should  be  able  to  control  quickly  the  temperature  of 
inlet  water  to  calorimeter.  After  some  experimenting  the  fol¬ 
lowing  installation  was  adopted.  A  No.  2  flush  tank  wTith  ball 
cock  on  inlet  was  placed  8  to  9  feet  from  floor,  the  outlet  to 
calorimeter  flowing  through  a  5-inch  diameter  strainer  of  40- 
mesh  copper  gauze.  A  visible  waste  indicator  was  introduced  on 
the  overflow  line  from  inlet  weir  to  calorimeter  at  the  height  of 
the  eye;  and  it  wTas  found  very  useful,  as  the  minimum  amount 
of  water  could  be  wasted  and  yet  a  constant  level  insured  by 
an  easy  inspection  of  the  indicator  in  line  with  the  thermometer 
reading  lenses.  The  water  supply  to  tank  came  through  a  gas 


5 


tank  heater.  On  the  outlet  was  a  brass  cross  (all  the  piping 
being  one-half  inch  brass)  carrying  a  thermometer,  reading  to 
single  degrees  with  an  open  scale,  and  two  lines,  with  valves, 
one  to  waste  and  the  other  to  tank.  On  the  tank  line  a  safety 
valve  was  introduced  before  the  valve.  The  temperature  of 
water  flowing  to  supply^tank  could  be  nicely  regulated  to  room 
temperature,  and  was  further  made  more  uniform  by  a  stirrer 
introduced  into  tank.  When  the  conditions  were  favorable  for 
a  test  the  gas  and  water  were  shut  off  at  heater,  and  the  inlet 
temperature  at  calorimeter  generally  was  held  to  within  one 
one-hundredth  of  a  degree  Fahrenheit. 

p 

Calculation  of  Heat  Values. 

The  form  used  for  recording  observations  is  shown  in  Ap¬ 
pendix  D  and  the  tables  for  computation  in  Appendix  E.  The 
method  of  calculation  has  been  simplified  by  the  adoption  and 
use  of  a  table  of  co-logarithmic  factors  (Table  C,  Appendix  E); 
these  are  the  co-logarithms  of  the  amount  of  gas  actually  used, 
corrected  for  temperature  and  total  pressure,  when  two-tenths  of 
a  cubic  foot  are  passed  by  the  meter.  Thus  the  calculation  is 
simplified  to  adding  the  logarithms  of  weight  of  water  found 
and  the  corrected  difference  (Table  A  and  thermometer  correc¬ 
tion)  of  temperature  of  inlet  and  outlet  water  and  the  logarith¬ 
mic  factor  from  Table  C;  to  the  number  corresponding  to  the 
logarithm  thus  found  is  added  1  Btu1  for  heat  loss  and  the 
correction  for  humidity  from  Table  E,  the  result  being  total 
British  thermal  units. 

For  purposes  of  comparing  results  “efficiency  factors”  were 
developed,  that  for  coal  gas  being  Btu’s  per  pound  of  coal,  and 
for  the  oil  in  water  gas  a  factor  was  developed  from  the  formula 
B — 3qq(10°o -so  A)?  where  g  js  observed  total  heating  value 
of  the  carbureted  water  gas,  and  A,  the  number  of  gallons  of 
oil  per  thousand  cubic  feet-  the  values,  300  Btu’s  for  blue 
water  gas  and  80  cubic  feet  gas  per  gallon  oil,  have  been 
checked  by  one  of  the  companies.2  The  oil  factors  are  for 
Btu’s  per  cubic  foot  from  the  oil  used.  The  results  for  the 
year  appear  as  Appendix  F. 


1  Bureau  of  Standards,  Circular  No.  48,  p.  171. 

2  Haddock,  Nov.  20,  1916. 


6 


Experiments. 

In  addition  to  installing,  calibrating  and  checking  calorim¬ 
eter  apparatus,  and  making  routine  tests,  various  experiments 
were  carried  out  in  the  study  of  the  effects  on  gas  manufac¬ 
tured  to  a  calorific  basis.  As  a  sequel  to  experiments  pre¬ 
viously  made,  showing  the  varying  development  of  light  in 
different  burners,  more  particularly  open  burners,  tests  were 
made  on  the  effect  on  candle  power  of  gases  made  to  a  cal¬ 
orific  basis.  Experiments  were  also  carried  out  on  the  effect 
of  distribution  on  calorific  value,  on  the  effect  of  adding  super¬ 
heated  steam  to  vertical  retorts  and  on  oil  washing. 

Burners. 

Gas  has  been  valued  for  many  years  on  a  candle-power 
basis;  this  was  useful  in  the  earlier  days  of  gas  lighting,  as  the 
chief  use  of  gas  was  for  light  developed  by  burning  the  gas  in 
some  form  of  burners.  As  the  art  developed  the  so-called 
Argand  type  of  burner  was  found  to  give  the  most  light,  and 
was  used  for  testing  at  the  time  supervision  began  to  take 
form;  this  type  has  been  refined  until  to-day  the  Carpenter 
“ Metropolitan  No.  2”  burner  is  recognized  as  the  standard  for 
scientific  testing.  In  the  early  days  some  form  of  Argand 
burner  was  in  fairly  general  use,  as  it  developed  considerable 
light  from  the  gas;  under  these  conditions  the  consumer  ob¬ 
tained  practically  the  same  amount  of  light  as  the  supervising 
authorities  certified,  but  with  the  increasing  candle  power,  the 
improvement  of  open  burners  and  the  more  general  use  of  gas, 
open  burners  became  almost  universally  used,  while  the  testing 
was  continued  with  burners  “that  were  best  adapted  to  the 
gas.”  When  incandescent  gas  lighting  became  common  the 
discrepancy  was  still  further  increased  between  the  light  the 
.consumer  obtained  and  what  the  supervising  authorities  stated 
the  gas  possessed.  These  facts,  added  to  the  comparative 
crudeness  of  testing,  made  it  desirable  to  consider  some  more 
scientific  method  of  valuing  gas.  As  bearing  on  this  subject  a 
great  many  tests  of  candle  power  as  developed  by  different 
burners  and  gases  were  made  with  the  testing  Argand  and  a 
typical  open  burner;  the  details  appear  in  Appendix  H.  Tests 


7 


were  made  in  1910  and  1912  at  routine  inspections  when  com¬ 
panies  were  operating  under  a  candle-power  basis;  in  1916 
tests  were  made  of  groups  of  candle-power  and  heat-unit  com¬ 
panies.  Formerly,  owing  to  the  relatively  high  candle-power 
gas  supplied,  consumers  could  realize  in  open  burners  nearly 
the  candle  power  of  the  gas  as  tested,  but  as  the  candle  power, 
shown  by  official  testing,  dropped,  the  relative  loss  in  open 
burners  was  more  marked.  Some  tests  were  made  of  two  types 
of  open  burners;  with  the  high  candle-power  gases  these  burners 
had  the  same  efficiency,  but  with  a  14.5  candle-power  mixed 
gas  the  following  results  were  obtained :  — 


Pressure  (Inches  of  Water). 

Burner  A. 

Burner  B. 

Actual 

Candle 

Power. 

Candle  Power 
per 

Cubic  Foot. 

Actual 

Candle 

Power. 

Candle  Power 
per 

Cubic  Foot. 

2.0, . 

5.1 

1.08 

11.0 

2.01 

5.5 

0.98 

11.7 

1.97 

5.6 

0.83 

13.3 

1.97 

The  difference  in  light  given  per  cubic  foot  between  0.83 
candles  and  2.01  candles  is  marked,  especially  as  the  Argand 
testing  burner  gave  2.9  candles  per  cubic  foot,  and  the  incan¬ 
descent  would  give  18  candles  per  cubic  foot.  Nearly  ten  times 
the  light  per  cubic  foot  can  be  obtained  from  this  quality  of  gas 
by  using  it  in  an  incandescent  rather  than  an  open  burner;  if 
an  open  burner  must  be  used,  certainly  the  best  type  should 
be  chosen. 

The  summary  follows,  also  a  comparison  in  percentages  of 
loss  of  candle  powder  when  using  gas  in  an  open  burner :  — 


1910. 

1912. 

1916. 

Loss  in  Open 
Burners, 

1912-16. 

Argand. 

Open. 

Argand. 

Open. 

Argand. 

Open. 

Candle 

Power. 

Per 

Cent. 

Water  gas,  . 

19.84 

19.51 

20.27 

19.98 

16.80 

9.48 

10.50 

52.5 

Coal  gas, 

16.43 

14.89 

16.76 

14.53 

16.10 

12.27 

2.26 

15.6 

Mixed  gas,  . 

17.85 

16.35 

17.75 

15.68 

16.83 

12.25 

3.43 

21.9 

8 


1916 


Candle-Power 

Companies. 

Heat-unit  Com¬ 
panies. 

Loss  in  Open 
Burners. 

Argand. 

Open. 

Argand. 

Open. 

Candle 

Power. 

Per 

Cent. 

Water  gas, 

16.80 

9.48 

14.47 

8.43 

1.05 

11.1 

Coal  gas,  .... 

16.10 

12.27 

15.50 

11.37 

0.90 

7.3 

Mixed  gas, 

16.83 

12.25 

15.08 

10.12 

2.13 

17.4 

Distribution. 

It  is  well  known  that  the  candle  power  developed  at  the 
works  is  not  always  delivered  to  the  consumer  in  its  entirety, 
either  under  low  pressure  for  short  distances  or  high  pressure 
for  long  distances.  In  studying  the  effect  of  distribution  of  gas 
made  to  a  calorific  basis,  high-pressure  distribution  was  used 
to  accentuate  the  effect. 

Old  Colony. 

A  test  was  made  of  the  water  gas  supplied  under  high  pres¬ 
sure  by  the  Old  Colony  Gas  Company  during  September,  1916; 
this  was  a  warm  period,  and  the  gas  showed  comparatively 
little  loss  from  compression  and  probably  none  from  atmos¬ 
pheric  conditions.  The  works  experiments  were  not  wholly 
satisfactory,  as  the  tests  were  on  isolated  samples  and  not  aver¬ 
ages  of  gas;  however,  there  was  an  apparent  loss  of  6.4  Btu’s 
between  the  holder  and  after  the  compressor;  these  tests  were 
made  during  the  make,  gas  being  made  into  the  holder  through 
the  purifiers  until  1  p.m.  September  13.  The  plant  was  then 
shut  down  for  twenty-four  hours  and  the  system  supplied  from 
this  stock.  In  the  afternoon,  at  the  Vine  Street,  Weymouth, 
testing  station  (approximately  1  mile  from  the  East  Braintree 
works),  there  was  a  gain  of  23.7  Btu’s  to  551.4;  this  represented 
the  value  of  the  stock  of  gas  in  the  holder  after  being  com¬ 
pressed  and  sent  1  mile.  The  next  morning,  at  Whitman,  12 
miles  from  the  works,  tests  were  made  at  Roberts’  Tack  and 
Nail  Company  after  the  gas  had  been  stored  since  1  o’clock  of 
the  previous  afternoon  and  the  system  kept  filled  at  10  pounds’ 
pressure;  the  results,  531.7  Btu’s  showed  a  loss  of  3.6  per  cent. 


9 


Btu’s  and  the  uniformity  of  gas,  checked  in  the  afternoon  of  the 
same  day  at  Vine  Street,  Weymouth,  as  552.8  Btu’s.  The 
following  tables  show  results  and  analyses :  — 


Works, 

After  compressor, 
Testing  station, 
Whitman, 

Testing  station, 


Place. 


Date. 

B.  T.  U 

September  13,  ... 

534.1 

September  13,  ... 

527.7 

September  13,  ... 

551.4 

September  14, 

531.7 

September  14,  ... 

552.8 

Analyses  {Per  Cent,  by  Volume). 


After  Com¬ 
pressor. 

Testing 

Station. 

Twelve 
Miles  under 
10  Pounds. 

Ethylene, . 

6.77 

7.04 

8.88 

Benzol,  etc., . 

2.01 

1.86 

0.79 

Marsh  gas, . 

9.10 

10.16 

10.39 

Hydrogen, . 

41.05 

40.50 

37.93 

Carbon  monoxid, . 

34.13 

34.31 

36.01 

Nitrogen . 

2.43 

2.24 

2.55 

Oxygen, . 

0.17 

0.14 

0.21 

Carbon  dioxid, . 

4.34 

3.75 

3.24 

Maiden-Rev  ere. 

In  October,  1916,  and  again  in  February,  1917,  tests  were 
made  for  loss  of  Btu’s  from  distribution  on  a  6-inch  pressure 
line  between  Malden  and  Revere,  a  distance  of  6  miles.  In  the 
first  series  gas  was  taken  from  the  line  to  compressor  and 
holder;  an  average  of  70  per  cent,  water  gas  for  the  first  day 
was  mixed  with  the  coal  gas  before  the  station  meter,  but  the 
mixture  fluctuated  with  the  coal-gas  production.  On  the  sec¬ 
ond  day  only  50  per  cent,  water  gas  was  used.  For  the  series 
of  tests  in  February,  1917,  the  gas  at  Malden  was  taken  after 
the  compressor,  with  30  pounds  pressure,  and  reduced  through 
an  individual  governor  to  5  inches;  thus  the  conditions,  as 
compared  with  those  of  October  5,  were  less  severe,  and  showed 
the  effect  only  of  distribution  and  weather,  while  the  October 


10 


tests  showed,  in  addition,  the  effects  of  compression.  In  Octo¬ 
ber  the  first  test,  on  the  4th,  was  of  gas  at  the  usual  pressure 
of  about  8  pounds,  while  the  second  test,  on  the  5th,  was  of  gas 
under  30  pounds,  a  pressure  used  when  the  occasion  demanded; 
the  flow  was  at  the  rate  of  33,000  cubic  feet  per  hour  the  first 
day,  and  at  65,000  cubic  feet  the  second  day.  At  Revere  the 
gas  for  test  was  taken  off  just  after  the  reducing  governor. 
Under  the  8  pounds’  pressure  there  was  an  actual  increase 
found  in  the  heat  value  at  Revere,  while  under  30  pounds’ 
pressure  the  loss  was  1.62  per  cent. 


B.  T.  V .,  Oct.  4,  1916,  8  Pounds  Pressure. 


Time. 

Malden. 

Revere. 

Time. 

Malden. 

Revere. 

10.00 . 

559.4 

- 

2.00,  .... 

540.0 

534.9 

10.30 . 

549.2 

- 

2.30 . 

551.6 

546.7 

10.50,  .... 

- 

560.0 

3.00 . 

532.6 

554.5 

11.00,  .... 

564.4 

575.2 

3.30 . 

507.2 

535.1 

11.15,  .... 

- 

578.2 

3.40,  .... 

- 

535.6 

f  535.4 

] 

4.00,  .... 

572.4 

516.1 

11.30 . 

576.3 

l  546.1 

J 

4.10,  .... 

- 

515.9 

12.00 . 

570.3 

4.15 . 

567.0 

- 

12.20 . 

545.9 

- 

4.30 . 

539.4 

560.3 

12.30 . 

- 

563.5 

4.45,  .... 

- 

563.2 

12.35 . 

538.8 

- 

5.00 . 

- 

547.4 

12.50 . 

538.8 

- 

5.15,  .... 

- 

568.5 

1.00 . 

533.1 

552.1 

Average, 

544.9 

552.7 

1.30 . 

542.5 

548.1 

1  Cleaning  pipe. 


B.  T.  U.,  Oct.  5,  1916,  30  Pounds  Pressure. 


Time. 

Malden. 

Revere. 

Time. 

Malden. 

Revere. 

10.00,  .... 

526.5 

532.1 

1.00 . 

539.9 

542.4 

10.30 . 

556.0 

562.4 

1.30 . 

530.6 

524.9 

11.00 . 

549.0 

522.8 

2.00 . 

517.0 

535.9 

11.30 . 

586.3 

558.1 

2.15 . 

558.5 

- 

11.45,  .... 

548.7 

- 

2.30,  .... 

561.0 

540.1 

12.00 . 

566.8 

534.4 

Average, 

550.4 

541.4 

12.30 . 

562.2 

560.5 

11 


Analyses  {Per  Cent,  by  Volume). 


Malden, 
Oct.  4,  1916. 

Revere, 
Oct.  4,  1916. 

Malden, 
Oct.  5,  1916. 

Revere, 
Oct.  5,  1916. 

Specific  gravity, . 

0.584 

0.610 

0.587 

0.582 

Ethylene, . 

6.08 

6.78 

6.26 

6.06 

Benzol, . 

1.69 

1.60 

1.08 

0.87 

Marsh  gas, . 

19.72 

20.18 

26.18 

26.86 

Hydrogen, . 

38.06 

36.48 

35.25 

35.02 

Carbon  monoxid,  .... 

22.85 

22.25 

15.48 

15.56 

Nitrogen, . 

6.98 

7.65 

10.68 

10.33 

Oxygen, . 

0.11 

0.40 

0.61 

0.93 

Carbon  dioxid, . 

4.51 

4.66 

4.46 

4.37 

Similar  tests  were  made  in  February,  1917,  to  bring  in  cold 
weather  conditions;  the  gas  at  Malden  was  taken  off  just  after 
the  compressor,  so  that  any  change  in  the  gas  would  come  from 
distribution  (6  miles)  and  cold.  For  some  weeks  the  tempera¬ 
ture  had  been  below  freezing  and  snow  and  ice  were  on  the 
ground,  which  was  frozen  for  2§  to  4  feet,  the  temperature  at  6 
p.m.  February  15  being  28°  F.,  and  at  6  a.m.  February  16,  the 
day  of  the  test,  21°.  The  gas  (74  per  cent,  water  gas)  in  the 
latter  part  of  its  travel  passed  over  a  railroad  bridge.  The  loss 
in  Btu’s  was  36.5,  or  6.37  per  cent.  An  interesting  comparison 
is  given  later  in  the  following  tables  of  the  results  in  averages 
reported  by  the  two  companies  for  three  weeks,  including  that 
in  which  the  tests  were  made :  — 


B.  T.  U.,  Feb.  16,  1917  {74  Per  Cent.  Water  Gas). 


Time. 

Malden. 

Revere. 

Time. 

Malden. 

Revere. 

10.00,  .... 

571.0 

- 

11.30,  .... 

559.0 

- 

10.07 . 

570.0 

- 

11.35 . 

- 

523.2 

10.15 . 

591.8 

- 

11.45 . 

552.0 

527.6 

10.25 . 

584.6 

549.1 

11.50,  .... 

561.4 

- 

10.30,  .... 

572.6 

559.9 

12.00 . 

555.1 

526.6 

10.45 . 

539.4 

533.9 

12.05 . 

- 

524.2 

10.52 . 

562.0 

- 

12.15,  .... 

575.1 

529.9 

11.00 . 

619.7 

514.1 

12.20,  .... 

578.1 

531.6 

11.05,  .... 

606.3 

543.0 

12.25,  .... 

579.3 

- 

11.10,  .... 

563.0 

- 

12.30 . 

584.9 

532.1 

11.15,  .... 

558.4 

568.0 

12.40,  .... 

- 

535.5 

11.22,  .... 

570.0 

- 

Average, 

572.7 

536.2 

11.25,  .... 

- 

543.7 

12 


Analyses  {Per  Cent,  by  Volume). 


Malden. 

Revere. 

Ethylene,' . 

8.06 

6.44 

Benzol, . 

1.31 

1.17 

Marsh  gas, . 

16.86 

19.61 

Hydrogen, . 

37.22 

35.31 

Carbon  monoxid, . 

25.63 

21.03 

Nitrogen, . 

6.17 

10.88 

Oxygen, . 

0.35 

0.81 

Carbon  dioxid, . 

4.38 

4.75 

Average  Daily  B.  T.  U.  reported  by  Gas  Companies  covering  Period  of 

Distribution  Tests. 


Date. 

Works.  s 

Malden 

Testing 

Station. 

Suburban 

(Revere) 

Testing 

Station. 

February  5, . 

528.0 

526.0 

522.5 

February  6, . 

531.0 

531.0 

542.0 

February  7, . 

544.0 

538.0 

540.0 

February  8, . 

550.0 

541.0 

539.5 

February  9, . 

544.0 

540.0 

533.0 

February  10, . 

535.0 

534.0 

525.5 

February  12, . 

536.0 

535.0 

528.0 

February  13, . 

538.0 

541.0 

537.5 

February  14, . 

545.0 

550.0 

546.0 

February  15, . 

557.0 

556.0 

547.0 

February  16, . 

563.0 

561.0 

548.0 

February  17, . 

554.0 

556.0 

536.5 

February  19, . 

554.0 

553.0 

536.5 

February  20, . 

560.5 

550.0 

549.5 

February  21, . 

560.7 

566.0 

553.0 

February  22, . 

556.7 

- 

534.0 

February  23, . 

550.0 

548.5 

546.6 

February  24, . 

557.7 

554.0 

552.5 

February  26, . 

545.5 

541.0 

540.5 

February  27, . 

546.0 

540.0 

542.0 

Average, . 

547.8 

545.3 

540.0 

13 


T  aunton- Attleboro. 

Taunton  is  a  coal-gas  plant,  horizontals,  machine-charged, 
making  about  700,000  feet  per  day;  of  this,  75,000  cubic  feet 
is  sent  to  Attleboro,  under  an  initial  pressure  of  20  pounds, 
through  1  mile  of  2-inch  pipe  enlarging  to  8  inches  for  13  miles. 
This  afforded  an  opportunity  for  testing  the  effect  on  Btu’s  of 
high-pressure,  long-distance  distribution  of  coal  gas.  The  Taun¬ 
ton  tests  were  made  at  the  up-town  testing  station,  while  the 
gas  for  compression  was  taken  from  the  same  line  as  it  left  the 
holder.  On  Nov.  2,  1916,  and  again  on  March  30,  1917,  when 
the  main  had  been  exposed  to  freezing  temperatures  during  the 
winter  and  was  still  at  about  32°  F.  in  places,  tests  were  made 
for  British  thermal  units;  in  the  first  case  little  loss  was  shown, 
the  average  at  Taunton  being  586.4  and  at  Attleboro  585.5 
Btu’s.  On  the  second  test  the  Taunton  Btu’s  averaged  642.4 
and  the  Attleboro  627.6,  a  loss  of  2.30  per  cent.;  this  is  a  small 
loss  on  a  high  heat  unit  content.  The  samples  for  analysis 
were  taken  by  an  averaging  bottle. 


B.  T.  U.f  Nov.  2,  1916. 


Time. 

Taunton. 

Attleboro. 

Time. 

Taunton. 

Attleboro. 

10.30 . 

590.1 

- 

1.15 . 

- 

579.9 

11.00,  .... 

586.8 

585.6 

1.30 . 

589.7 

581.3 

11.15,  .... 

- 

587.1 

1.45,  .... 

- 

584.5 

11.20 . 

- 

584.8 

2.00,  .... 

585.5 

589.4 

11.30,  .... 

589.4 

587.1 

2.15 . 

- 

589.1 

11.35 . 

- 

584.6 

2.30 . 

576.3 

588.3 

11.45 . 

- 

587.6 

2.45 . 

- 

588.5 

11.50 . 

- 

586.9 

3.00,  .... 

585.0 

587.9 

12.00,  .... 

590.7 

585.1 

3.15 . 

- 

585.2 

12.05,  .... 

- 

583.5 

3.30 . 

585.8 

586.7 

12.25 . 

- 

584.3 

3.45 . 

- 

581.6 

12.30,  .... 

583.8 

586.1 

4.00 . 

582.5 

585.2 

12.45 . 

- 

585.6 

Average, 

586.4 

586.0 

1.00,  .... 

-590.7 

582.3 

14 


Analyses  ( Per  Cent,  by  Volume). 


Taunton. 

Attleboro. 

Ethylene, . 

2.41 

2.37 

Benzol, . 

0.56 

0.79 

Marsh  gas, . 

31.33 

31.77 

Hydrogen . 

50.80 

51.42 

Carbon  monoxid, . 

8.47 

7.71 

Nitrogen, . 

4.10 

3.68 

Oxygen,  . 

0.32 

0.28 

Carbon  dioxid, . 

2.01 

1.98 

B.  T.  U.,  March  30,  1917. 


Time. 

Taunton. 

Attleboro. 

Time. 

Taunton. 

Attleboro. 

10.30 . 

- 

640.6 

12.15,  .... 

- 

628.7 

10.35 . 

650.6 

- 

12.30 . 

633.9 

626.6 

10.40,  .... 

646.0 

- 

12.45 . 

- 

627.0 

10.45 . 

- 

634.5 

1.00 . 

647.7 

625.9 

11.00,  .... 

643.9 

629.0 

1.15 . 

- 

621.7 

11.15 . 

- 

626.9 

1.30,  .... 

646.0 

624.0 

11.30 . 

635.3 

625.7 

1.45,  .... 

- 

620.1 

11.45 . 

- 

628.6 

2.00 . 

642.6 

- 

12.00,  .... 

635.6 

627.3 

Average, 

642.4 

627.6 

Analyses  {Per  Cent,  by  Volume). 


Taunton. 

Attleboro. 

Ethylene, . 

4.22 

3.24 

Benzol, . 

0.27 

0.79 

Marsh  gas, . 

36.95 

36.61 

Hydrogen, . 

45.59 

47.10 

Carbon  monoxid, . 

7.19 

7.24 

Nitrogen, . 

3.69 

3.20 

Oxygen,  . 

- 

- 

Carbon  dioxid, . 

2.09 

1.82 

15 


Steaming  Verticals. 

Vertical  installations  for  coal-gas  manufacture  are  of  two 
types,  intermittent  and  continuous;  in  the  continuous  type  the 
coal  is  fed  at  the  top,  and  the  coke  withdrawn  at  the  bottom 
of  retort  in  such  manner  that  the  carbonization  proceeds  con¬ 
tinuously.  This  type  offers  a  splendid  opportunity,  in  theory, 
of  “ improving  the  art  of  gas  manufacture”  by  increasing  the 
heat  units  per  pound  of  coal  by  the  introduction  of  steam.  Ex¬ 
periments  were  carried  out  at  the  Springfield  Gas  Light  Com¬ 
pany’s  plant  in  March,  1917,  with  satisfactory  results. 

Unit  B,  consisting  of  24  retorts,  Glover-West,  in  three 
benches  of  eight  retorts  each,  was  so  arranged  that  the  gas 
could  be  purified  and  kept  separate  from  the  other  gases  until 
a  sample  could  be  taken  in  the  averaging  holder.  After  experi¬ 
menting  on  amount  of  steam  that  could  be  used,  the  following 
method  was  decided  on:  20  pounds’  pressure  steam  was  fed 
through  a  fixed  aperture,  reducing  the  pressure  to  9-9.5 
pounds;  this  steam  was  passed  through  two  lengths  of  pipe 
placed  in  a  waste  heat  flue  and  acquired  about  200°  F.  super¬ 
heat;  then  passing  through  an  aperture  less  than  two-tenths 
inch  diameter  the  steam  entered  the  retort  at  its  lower  end  at 
the  rate  of  350  pounds  per  twenty-four  hours  per  retort.  The 
superheated  steam  passing  through  the  red-hot  coke  in  lower 
part  of  retort  would  be  partially  decomposed,  forming  blue 
water  gas  of  approximately  equal  parts  carbon  monoxid  and 
hydrogen;  but  analysis  of  the  gas  shows  further  action  of  the 
steam  and  water  gas  in  preventing  the  cracking  of  the  hydro¬ 
carbons.  The  hydrogen  in  the  steamed  sample  should  have  in¬ 
creased  by  the  same  amount  as  the  carbon  monoxid  if  the 
action  were  only  that  of  making  blue  water  gas,  but  as  the 
hydrogen  remained  the  same,  in  proportion,  as  before  steaming, 
while  the  carbon  monoxid  was  increased  (over  3  per  cent.), 
and  the  illuminants  increased  in  total  amount  and  also  in  pro¬ 
portion,  it  is  fair  to  deduce  that  the  introduction  of  steam  im¬ 
proved  the  quality  of  gas  produced  as  well  as  its  quantity.  In 
addition  to  this  another  advantage  appeared  in  the  changed 
character  of  carbon  in  retorts;  generally  this  is  in  a  hard,  com- 


16 


pact  form  detached  with  difficulty  from  the  retort,  but  when 
steamed  the  carbon  is  more  amorphous,  is  more  easily  de¬ 
tached  by  barring  and  burns  off  quicker;  in  fact,  the  tests 
showed  43.7  per  cent,  less  time  lost  from  retorts  out  for  scurf- 
ing.  There  is  also  an  apparent  increase  in  the  ammonia  pro¬ 
duction  of  over  12  per  cent. 

The  actual  tests  ran  twTo  weeks,  after  considerable  prelim¬ 
inary  work  had  been  done.  Coal  of  at  least  three  varieties,  suf¬ 
ficient  for  the  two  weeks’  test,  was  well  mixed  in  the  storage 
shed  to  insure  a  uniform  supply.  A  15-foot  sampling  holder 
was  so  arranged  as  to  collect  an  average  sample  of  the  gas  for 
the  day  period  from  8  a.m.  to  5  p.m.,  and  for  the  night  period 
from  5  p.m.  to  8  a.m.  The  company’s  chemist  made  tests  on 
each  day  and  night  sample,  and  the  State  inspectors  made  one 
day  and  night  sample  test  each  week  for  a  check.  The  first 
week  was  run  without  steam,  the  second  week  with  steam. 
The  results  follow :  — 


Springfield  Steaming  Tests. 
Company’s  Averages  for  Each  Week. 


Not 

steamed. 

Steamed. 

Increase 
(Per  Cent.). 

Average  daily  make  (cubic  feet),1 

650,000 

730,000 

12.30 

Average  yield  per  pound  (cubic  feet), 

5.49 

6.72 

22.40 

Average  Btu, . 

540 

519 

3.892 

Average  Btu  per  pound, . 

2,965 

3,488 

17.60 

Average  candle  power, 3 . 

9.5 

7.0 

26. 302 

Average  retorts  out  per  day,  .... 

1.81 

1.02 

43.702 

1  One  week  without  and  one  week  with  steaming.  2  Decrease.  3  Argand  burner. 


17 


State  Inspectors’  Results  and  Analyses. 


March  16, 
1917, 

not  steamed. 

March  23,  1917,  steamed. 

Day. 

Night. 

Average  Btu  total, . 

523. 40 1 

516.00 

511. 202 

Average  Btu  net, . 

475.70 

468.80 

463.20 

Candle  power, . 

8. 27 3 

6.10 

6.404 

Yield  (feet  per  pound), . 

5.49 

6.72 

6.726 

Btu  per  pound  of  coal,  ..... 

2, 873. 00 8 

3,466. 007 

3, 435. 00 8 

Analyses  ( Per  Cent,  by  Volume). 


Ethylene, . 

1.07 

1.79 

1.51 

Benzol, . 

0.97 

0.84 

1.06 

Marsh  gas, . 

27.33 

24.93 

24.42 

Hydrogen, . 

57.69 

56.11 

56.25 

Carbon  monoxid, . 

7.92 

11.03 

11.34 

Nitrogen . 

3.80 

3.55 

3.79 

Oxygen, . 

- 

- 

- 

Carbon  dioxid, . 

1.23 

.  1.75 

1.63 

1  Company’s  average  for  the  week,  540. 

2  Company’s  average  for  the  week,  519. 

3  Company’s  average  for  the  week,  9.5. 

4  Company’s  average  for  the  week,  7.0. 


6  19.57  per  cent,  increase. 

8  Company’s  average  for  the  week,  2,965. 

7  20.65  per  cent,  increase. 

8  Company’s  average  for  the  week,  3,488. 


The  results  show  an  increased  make  of  gas  per  pound  of  coal, 
an  increased  “  efficiency  ”  factor,  a  better  quality  of  gas,  an 
increased  yield  of  ammonia,  less  wear  and  tear  on  the  retorts 
and  no  disadvantages  as  yet. 

Oil  Washing. 

Having  in  mind  the  object  to  improve  the  efficiency  of  serv¬ 
ice,  and  knowing  the  difficulties  encountered  in  delivering  gas 
uniform  in  quality  at  the  consumer’s  premises,  the  question  of 
distribution  troubles  and  their  remedies  was  studied.  One  dif¬ 
ficulty  is  the  presence  in  the  commercial  gas  of  naphthalene 
and  easily  condensible  hydrocarbon  vapors;  these  are  affected 
by  size  of  mains,  speed  of  flow  of  gas,  fluctuations  in  pressure 
and  weather  conditions,  at  times  dropping  out  of  the  gas  and 


18 


at  other  times  being  picked  up  by  the  gas.  On  a  candle-power 
basis  it  is  desirable  to  have  the  gas  carry  as  much  of  these  ele¬ 
ments  as  it  will,  but  on  a  heat-unit  basis  they  are  not  so  desir¬ 
able.  Naphthalene  can  be  reduced  by  washing  the  gas  with 
various  oils;  this  washing  process  may  reduce  the  amount  of 
lighter  vapors  and  olefine  gases  that  are  not  so  undesirable. 
Washing  gas  with  oil  is  the  usual  method  of  recovering  the 
benzol,  toluol,  etc.,  carried  by  the  gas,  and  experiments  were 
instituted  and  much  study  given  to  the  effect  on  its  heating 
value  by  so  doing.  Various  oils  may  be  used,  the  usual  ones 
being  green  and  creosote  oils,  distillates  from  coal  tar  and  straw 
and  mineral  oils,  “non- viscous  neutrals,”  distillates  of  petro¬ 
leum.  Washing  with  these  oils  takes  from  the  gas  some  of  its 
constituents  which  are  recovered  from  the  wash  oils  by  dis¬ 
tillation  as  “light  oils.”  These  light  oils  are  composed  of  ben¬ 
zol,  toluol,  solvent  naphthas  and  other  heavier  vapors,  as  well 
as  naphthalene.  At  present  toluene  (the  pure  toluol)  is  of  im¬ 
portance  as  a  base  for  the  manufacture  of  high  explosives,  and, 
owing  to  the  difficulty  of  getting  apparatus  for  its  recovery 
from  gas,  study  was  given  to  this  phase  of  the  question.  The 
problem  became  one  of  improvising  apparatus  to  wash  gas  and 
to  recover  the  light  oils.  Gas  oil  as  used  for  making  water  gas 
was  used,  in  a  Standard  washer  scrubber,  as  a  washing  me¬ 
dium;  a  steam-heated  still  was  made  from  a  boiler  feed  water 
heater,  and  a  condenser  from  a  section  of  hydraulic  main  put 
on  end  with  piping,  later  supplanted  by  a  coil  of  lead  pipe,  for 
condensing  the  vapors.  The  outlet  from  still  was  a  6-inch  pipe, 
8  feet  high,  filled  with  stones,  acting  as  a  dephlegmator.  Pipe 
lines,  pumps  and  storage  tanks  completed  the  equipment.  As 
considerable  apprehension  was  felt  by  the  plant  manager  as  to 
naphthalene  being  sent  out,  attention  was  given  to  chemical 
control  of  this  element;  a  method  for  rapid  analysis  was  de¬ 
vised  and  tested,  and  it  was  found  that,  with  the  coal  gas  ex¬ 
perimented  with,  the  naphthalene  content  was  reduced  from 
between  26  to  28  grains  per  100  cubic  feet  to  between  5  to  6 
grains  per  100  cubic  feet  by  washing  with  gas  oil.  An  addi¬ 
tional  advantage  was  found  in  the  reduction  of  total  sulphur  in 
the  gas;  before  the  washing  the  amount  was  28.4  grains  per 
100  cubic  feet,  and  after  washing,  19.5  per  100  cubic  feet. 


19 


The  oil  used  assayed  per  cent,  off  at  200°  C.;  28|  per 
cent,  off  at  250°  C.;  62  per  cent,  off  at  300°  C.;  88§  per  cent, 
off  at  350°  C.;  11|  per  cent,  as  residue. 

A  test  was  carried  out,  washing  1,000,000*  cubic  feet  of  gas 
with  1,556  gallons  of  oil  in  twelve  hours,  obtaining  74  gallons 
light  oils,  equivalent  to  4.76  per  cent,  of  the  wash  oil  used; 
these  light  oils  distilled  off  from  the  benzolized  oil  gave  34  per 
cent,  to  100°  C.;  22  per  cent,  to  120°  C.;  7  per  cent,  to  135°  C. 

On  fractionating  with  a  column  still  head  there  was  found 
29.5  per  cent,  benzene,  12.8  per  cent,  toluene  and  5.8  per  cent, 
solvent  naphthas. 

The  effect  on  the  gas  is  shown  in  the  following  table.  The 
retorts  were  charged  every  two  hours,  24  at  each  charging,  re¬ 
quiring  forty  minutes.  The  oil  was  pumped  into  washer  scrub¬ 
ber  beginning  at  9  o’clock  and  occupying  nearly  an  hour.  The 
tests  were  made  on  gas  from  an  averaging  holder  which  showed 
a  lag  of  thirty  minutes  before  showing  the  effects  of  any  change 
in  the  gas.  Therefore  the  first  test  would  be  of  gas  before  the 
effects  of  charging  and  washing  were  felt. 


Time. 

B.  T.  U. 

Candle  Power. 

9.15  A.M., . 

597.8 

13.75 

9.45  a.m., . 

599.2 

13.66 

10.15  A.M., . 

604.7 

14.23 

10.45  a.m., . 

595.8 

14.18 

11.15  A.M . 

587.7 

14.01 

11.45  A.M., . 

581.2 

13.03 

12.15  p.m., . 

584.5 

12.33 

1.00  P.M., . 

587.1 

12.04 

1.30  p.m., . 

584.9 

12.13 

2.00  p.m., . 

578.4 

12.55 

2.30  p.m., . 

598.8 

13.05 

3.15  p.m., . 

602.3 

13.47 

Average, . 

591.8 

13.20 

20 


Conclusions. 

In  the  report  of  the  gas  inspector  for  the  year  1895  1  appear 
the  first  calorific  determinations  of  Massachusetts  gases.  Con¬ 
siderable  work  has  been  done  since  by  various  committees,  gas 
associations  and  the  Bureau  of  Standards  in  perfecting  appa¬ 
ratus  and  refining  methods,  until  to-day  calorific  value  is  gen¬ 
erally  recognized  as  the  most  scientific  method  of  valuing  gas. 

In  1915  a  series  of  tests  was  made 2  covering  the  typical  gases 
supplied  by  the  Massachusetts  companies,  —  coal  gas,  water 
gas  and  mixed  coal  and  water  gases.  If  the  average  candle 
power  found  in  these  tests  be  calculated  to  16,  the  minimum 
required  by  the  statutes,  and  the  average  calorific  value  be  re¬ 
duced  proportionately,  there  would  be  developed  a  “  translation 
value”  of  560.9  Btu’s.;  that  is,  if  all  the  gases  tested  had  been 
exactly  16  candle  power  the  equivalent  in  calorific  value  would 
have  been  560.9  Btu’s.  It  does  not  follow,  however,  that  if  gas 
should  be  made  to  a  calorific  value  of  560.9  Btu’s,  the  candle 
power  would  be  16.  This  investigation  was  undertaken,  in  part, 
precisely  for  such  information,  and  the  averages  for  the  several 
periods  show  the  results  obtained. 


Averages,  Weekly  Reports. 


Period  of  Time. 


B.  T.  U. 


Candle  Power. 


July  1,  1916,  to  Jan.  1,  1917, 
Jan.  1,  1917,  to  Apr.  1,  1917, 
Apr.  1,  1917,  to  July  1,  1917, 
July  1,  1917,  to  Oct.  1,  1917, 
July  1,  1916,  to  Oct.  1,  1917, 


559.7 

558.7 
557.9 

556.7 
558.5 


15.29 

12.64 

14.50 

14.63 

14.83 


Even  under  the  stress  of  abnormal  times  the  calorific  value 
has  remained  exceedingly  constant,  while  the  candle  power  has 
followed  the  usual  fluctuation  experienced  in  changing  weather. 
Uniformity  of  calorific  value  is  to  be  desired,  for  the  larger 
proportion  of  gas  is  used  as  a  source  of  heat,  and  a  uniform 
quality  of  gas  is  the  first  element  of  good  service  to  the  con- 


1  Public  Document  No.  55,  January,  1896. 

2  Thirty-first  annual  report,  Board  of  Gas  and  Electric  Light  Commissioners. 


21 


sumer.  If,  in  order  to  retain  a  uniform  candle  power,  the  cal¬ 
orific  value  varies,  the  actual  service  rendered  the  majority  of 
consumers  will  be  impaired. 

Good  service  consists  of  uniform  quality  of  gas  supplied 
under  uniform  pressure  through  efficient  appliances  kept  prop¬ 
erly  adjusted.  The  gas  should  be  of  such  quality  that  the  con¬ 
sumer  gets  the  greatest  amount  of  useful,  available  heat  at  the 
least  cost.  This  means  that  the  diluents,  or  inert  gases,  should 
be  kept  as  low  as  commercially  practicable,  and  that  the  gas 
should  be  so  made  as  to  insure  the  delivery  to  all  consumers, 
under  all  conditions  of  distance  and  weather,  of  the  largest  pos¬ 
sible  amount  of  the  heat  units  produced  in  the  manufacture  of 
the  gas. 

Experiments  already  described  show  the  loss  of  calorific  value 
from  high  pressure  and  long-distance  distribution  to  be  from 
2.3  to  6.5  per  cent.  Adding  steam  to  vertical  retorts  increases 
the  “efficiency  factor”  20.1  per  cent.,  as  well  as  being  advan¬ 
tageous  in  other  respects.  Tests  show  that  open  burners  do  not 
develop  the  full  lighting  value  of  gas  as  determined  by  the  of¬ 
ficial  burner;  the  loss  is  from  7.3  per  cent,  for  coal  gas  to  52.5 
per  cent,  for  water  gas.  Open  burners  vary  widely  in  efficiency 
among  themselves,  the  tests  ranging  from  28.6  to  69.3  per  cent, 
of  the  true  lighting  value  of  the  gas.  The  oil-washing  experi¬ 
ments  show  the  possibility  of  separating  benzol,  toluol,  etc., 
from  gas  by  washing  with  oil  in  improvised  apparatus.  While 
oil-washing  “hardens”  the  gas  and  tends  to  increase  uniformity 
of  quality  by  removing  condensible  hydrocarbon  vapors,  naph¬ 
thalene  and  sulphur,  it  reduces  also  the  calorific  value  somewhat. 
As  toluol  is  a  base  for  the  manufacture  of  high  explosives,  and 
is  needed  by  the  government  for  such  use,  and  as  benzol  may 
also  be  so  needed,  it  is  worth  noting  that  the  removal  of 
these  elements  would  reduce  the  calorific  value  by  6  to  7  per 
cent.  only.  But  as  the  urgent  need  of  the  Federal  government 
for  toluol  necessitates  the  recovery  of  this  element  from  gas,  the 
minimum  calorific  value  required  of  the  gas  companies  should 
be  set  at  such  a  figure  as  to  make  this  recovery  feasible.  Con¬ 
sidering  the  results  of  this  investigation,  the  uncertainty  of  a 
supply  of  suitable  coal  and  oil  for  gas  manufacture,  and  the 
need  of  the  Federal  government  for  toluol,  and  possibly,  later, 


22 


benzol,  it  would  seem  desirable  for  the  Board  to  establish  a 
minimum  calorific  standard  of  not  over  525  total  British  ther¬ 
mal  units,  and  to  recognize  the  possibility  that  this  figure  may 
need  revision  in  the  early  future. 

The  appendices  consist  of  the  following :  — 

A.  List  of  companies  participating  and  their  plant  equipment. 

B.  Diagram  of  calorimeter  tank  installation. 

C.  Form  used  for  weekly  report  by  the  gas  companies. 

D.  Form  for  recording  observations  and  calculating  results  of  calorific 

determinations. 

E.  Tables  for  calculation. 

F.  Efficiency  factors  for  coal  and  oil. 

G.  I.  Detailed  reports  Btu  and  candle  power  by  the  companies  to 

Oct.  1,  1917. 

II.  State  inspections  and  comparisons. 

III.  Curves  Btu  for  year  ending  June  30,  1917. 

H.  Burner  tests,  Tables  A  to  I. 

Respectfully  submitted, 

CHAS.  D.  JENKINS, 

Inspector . 


Nov.  12,  1917. 


23 


Appendix  A. 

List  of  Companies  participating,  and  their  Plant  Equipment. 


Company. 

Equipment. 

Attleboro  (No.  15), 

Coal  gas  (buying  25-30%  from  Taunton).  Seven  benches  of  8’s; 
four  10'  x  15"  x  30"  and  three  9'  x  14"  x  26".  Capacity  0.3 
million.  Daily  tests  at  testing  station;  no  calorimeter  at 
works. 

Boston  (No.  1), 

Mixture  coke  oven  and  water  gases  in  about  equal  parts.  Tests 
made  at  Everett  on  water  gas  three  times  daily.  Three  tests 
daily  at  testing  station  at  the  Central  Station,  Roxbury. 

Brockton  (No.  2), 

Coal  gas  with  40-60%  water  gas.  Four  stacks  of  4’s  Woodall- 
Duckham  verticals  wiih  a  capacity  of  0.9  million  per  24  hours. 
One  9'  and  one  7'  6"  U.  G.  I.  water  gas  sets,  capacity  2.0  millions. 
Three  tests  daily  of  coal,  water  and  mixed  gases;  one  test  daily 
at  testing  station. 

Cambridge  (No.  3), 

Coal  gas  with  25-35%  water  gas.  Twenty  benches  of  8’s  hori¬ 
zontals,  20'  x  16"  x  20",  capacity  3.5  millions.  Two  8'  6"  sets 
U.  G.  I.  and  one  8'  6"  set  Western  Gas  Construction  Company, 
water  gas,  capacity  3.5  millions.  Tests  made  at  works  four 
times  daily  from  sampling  tanks  of  coal  and  water  gases;  two 
tests  street  gas.  One  test  daily  at  testing  station. 

Charlestown  (No.  4),  . 

Coal  gas.  Nine  benches  of  8’s  horizontals,  20'  x  15"  x  26".  One 
test  daily  testing  station;  no  calori  r  eter  at  works. 

East  Boston  (No.  19),  . 

Coal  gas  with  40-50%  water  gas.  Tests  made  once  daily  at  office; 
no  calorimeter  at  works. 

Fall  River  (No.  5), 

Coal  gas  with  about  50%  water  gas.  Seven  stacks  of  9’s  U.  G.  I. 
verticals,  capacity  1.05  millions.  Four  sets  8'  6"  water  gas, 
capacity  4.0  millions.  Tests  on  coal  gas  from  averaging  (24 
hours)  holder,  1  Btu  and  candle  power  every  2  hours;  water 
gas,  snap  test  Btu  and  candle  power  every  hour.  Commercial 
gas,  one  test  daily  at  works  and  testing  station. 

Fitchburg  (No.  6), 

Coal  gas  with  about  50%  water  gas.  Two  banks  of  8’s  Glover- 
West  verticals,  capacity  0.4  millions.  One  6'  U.  G.  T.  and  one 
6'  6"  Lowe  gas  machine  for  water  gas,  capacity  0.9  million. 
Tests  on  coal  gas  twice  daily  from  sampling  holder;  three  times 
on  water  gas.  Commercial  gas  twice  daily  leaving  holder,  and 
once  at  testing  station. 

Haverhill  (No.  7), 

Straight  water  gas.  Two  8'  6"  U.  G.  I.  sets,  capacity  2.0  millions. 
Tests  made  three  times  daily  on  main  to  holders,  and  once  at 
testing  station. 

Holyoke  (No.  8),  . 

Coal  gas  with  20-25%  water  gas.  Six  stacks  of  4’s  Woodall- 
Duckham,  capacity  0.75  million.  One  7'  4"  set  Humphreys  & 
Glasgow  and  7'  6"  set  U.  G.  I.  water  gas,  capacity  1.25  millions. 
Daily  tests  on  24  hours  averaging  holder  sample,  and  two, 
morning  and  afternoon,  on  coal  gas;  two  tests  on  water  gas. 
One  test  at  testing  station. 

Lowell  (No.  9), 

Coal  gas  with  about  70%  water  gas.  Ten  benches  of  12*s  hori¬ 
zontals  14'  long,  capacity  1.6  millions.  One  8'  6"  and  one  9' 
Lowe  water  gas  sets,  capacity  3.2  millions.  Tests  once  daily, 
coal,  water  and  commercial  gases,  the  first  two  from  averaging 
tanks.  Once  daily  testing  station. 

Lynn  (No.  16), 

Coal  gas  with  40-50%  water  gas.  Ten  benches  of  9’s  inclined 
silica  18'  x  15"  x  26",  capacity  1.8  millions.  Two  8'  6"  U.  G.  I 
water  gas  sets,  capacity  4.2  millions.  Tests  on  each  gas  once 
daily,  and  once  on  commercial  gas  at  testing  station. 

24 


List  of  Companies  participating,  and  their  Plant  Equipment 

—  Concluded. 


Company. 

Equipment. 

Malden  (No.  10),  . 

Coal  gas  with  50-60%  water  gas.  Five  stacks  of  9’s  inclined, 
capacity  1.0  million.  One  11',  one  9'  and  one  7'  6"  water  gas 
sets,  capacity  5.0  millions.  Tests  on  coal  gas,  from  sampling 
tank,  twice  daily;  water  gas  three  times  daily.  Two  tests  daily 
on  commercial  gas  leaving  holder,  and  one  at  testing  station. 

New  Bedford  (No.  11), 

Coal  gas  with  38%  water  gas.  Six  benches  of  6’s  inclined,  20'  x 
26"  x  16",  capacity  0.57  million.  Water  gas,  two  9'  U.  G.  I. 
and  one  7'  6"  Western  Gas  Construction  Company,  capacity 
3.15  millions.  Averaging  tanks  used  for  both  coal  and  water 
gas;  one  test  of  each  gas  daily,  with  a  Parr  calorimeter.  One 
test  of  commercial  gas  at  testing  station. 

Old  Colony  (No.  12),  . 

Straight  water  gas  distributed  entirely  under  high  pressure  (8-30 
pounds).  One  7'  and  one  6'  U.  G.  I.  sets.  Daily  tests  at  test¬ 
ing  station. 

Springfield  (No.  13),  . 

Coal  gas  with  50-60%  water  gas.  Five  sets  of  9’s  inclined  and 
six  sets  of  8’s  Glover-West  verticals,  capacity  2.5  millions.  Two 
9'  and  one  10'  U.  G.  I.  water  gas  sets,  capacity  4.0  millions. 
Tests  on  mixed  coal  gases  from  averaging  holder  made  twice 
daily;  water  gas,  three  tests;  commercial  gas,  twice  daily  on 
leaving  holders,  and  once  at  testing  station. 

Suburban  (No.  17), 

High-pressure  gas  from  Malden,  6  miles  under  5-38  pounds’  pres¬ 
sure.  Tests  daily  on  commercial  gas. 

Taunton  (No.  18), 

Coal  gas  with  10-15%  water  gas  when  needed.  Six  benches  20'  x 
16"  x  26"  horizontals,  capacity  0.9  million.  One  7'  water  gas 
set,  0.6  million  capacity.  Daily  tests  at  testing  station. 

Worcester  (No.  14), 

0 

Coal  gas  with  40-50%  water  gas.  Two  sets  of  ten  banks  of  8’s  and 
one  set  eight  banks  of  16’s  horizontals,  capacity  3.8  millions. 
One  8'  6"  and  two  8'  water  gas  sets,  capacity  3.0  millions.  Tests 
once  daily  on  coal  gas  from  40-gallon  continuous  sampling  tank. 
Water  gas  once  a  day  from  relief  holder.  Commercial  gas  once 
a  day  at  works  and  at  testing  station. 

Appendix 


25 


?  ar\ 


5a 

f 


26 


Appendix  C. 


&.y  tamtammliii  .of  fS&csarljoflttla 
CALORIFIC  INVESTIGATION,  WEEKLY  REPORT 
BOAED  OF  GAS  AKO  ELECTBIC  LIGHT  COMKISSIOKEDS 


A.M. 

Company _ Six  day  period  ending _ P.M. _ 1917. 


COAL  GAS 

WATER  GAS 

Gas  made*  per  pound  of  coal 

Gas  made*1 

Kinds  of  coal  used 

Percentage  of  each 

Generator  coal  lbs.  per  M  gas 
Generator  coke  lbs.  per  M  gas 
Total  fuel  lbs.  per  M  gas 

• 

Analysis  each  cargo  above  coals 

Date 

a 

Oil,  gals,  per  M  cu.  ft.  gas* 

Moisture 

Ash 

Volatile 

Sulphur 

No.  hours  run,  each  machine 

Fixed  carbon 

Kind  of  enricher  used 

B.  T.  U. 

Tar,  gals,  per  M  cu.  ft.  gas 

Amount  per  hundred  lbs.  of  coal 

Kind  of  oil 

Analysis  of  oil 

Lbs.  coke  per  100  lbs.  coal 

Date 

Gab.  tar  per  100  lbs.  coal 

Spec,  gravity 

Lbs.  NH  j  per  100  lbs.  coal 

Distillation  up  to  100*  C 

200  —  250 

100  —  150 

250  —  300 

150  —  200 

300  —  350 

B.  T.  U.  gas,  average 

B.  T.  U.  gas,  per  lb.  coal 

B.  T.  U.  gas,  average 

B.  T.  U.  gas,  per  gal.  oil 

Candle-power 

burner 

Specific  gravity 

Candle-power 

Specific  gravity 

burner 

Analysis  gas 

Date 

Analysis,  or,  if  not  complete,  CO , 

Blum. 

Date 

CH« 

N, 

Blum. 

H, 

0, 

-  CH« 

N, 

CO 

CO, 

H, 

0, 

CO 

CO, 

COMMERCIAL  GAS 


Amount  gas  made*  total 1 

coal 

water 

%  watefj 

B.  T.  U.  at  works,*  average 

max. 

date 

min, 

date 

B.  T.  U.  testing  station,  average 

B.  T.  U.  State  inspection  * 

max. 

date 

date 

min. 

date 

Candle-power,  average 

at 

station,  burner  used 

Gas  analysis 4 

State  inspection*  Total  sulphur  per  100  cu.  ft. 

Date 

average 

Blum. 

N, 

max.  and  date 

CH« 

0, 

min.  and  date 

H, 

CO, 

CO 

Spec,  gravity 

Remarks : 


Signed 


•All  gas  returns  to  be  corrected  to  30"  bar.  aud  60*  F.,  purified  and  metered 
i  Thousands  and  tenths ;  Sunday  make  excluded 


■Adhere  to  schedule;  U  changed,  note  In  remarks  apace 

■Do  not  fill  In  ‘Average,  U  more  tl 


27 


Appendix  D. 


JtfrmG.  1. 19.  10.000.  8-’17. 

fElj e  Commontoealtf)  of  fflasistattjusiettss 
BOARD  OF  GAS  AND  ELECTRIC  LIGHT  COMMISSIONERS 
DAILY  CALORIFIC  TESTS 


Place 

a.m. 

Date  Time  p.m. 

Kind  of  Gas 

No.  of  Calorimeter  Maker 

Temp,  of  Room  F. 

Humidity  % 

Wet  Bulb 

Dry  Bulb 

Water  Valve 

Exhaust  Valve 

Rate  per  Hour 

Temp,  of  Meter 

Meter  Outlet  Pressure 
Equivalent  in  Mercury 
Barometer 

Total  Pressure 

Water  Temperature 

In 

Out 

In 

Out 

In 

Out 

Temp,  of  Exhaust 

Condensation ;  Water  c.c. 

Meter  start 
“  end 

B.  T.  U.  from  Cond. 

GAS 

1 

Meter  start 
"  end 

2 

Meter  start 
“  end 

3 

Meter  start 
“  end 

Av.  Temp,  observed 

Ther.  and  Stem.  Corr. 
Corrected  Temp. 

Rise  in  Temp. 

Weight  of  Water 

Observed.  B.  T.  U. 

Humidity  Correction 

Heat  Loss 

Total  B.  T.  U. 

Average  B.  T.  U. 

Net  B.  T.  U. 

Remarks : 


28 


Appendix  E. 


Tables  for  Calorimetric  Corrections. 


Table  A.  —  Stem  Correction  for  Outlet-Water  Thermometer. 


Temperature  Rise 

Room  Temperature. 

of  Water. 

50° 

60° 

70° 

80° 

90° 

100° 

imersed 

S 

o  £5  o 

+0.01 

.03 

.04 

+0.02 

.04 

.05 

+0.03 

.05 

.07 

+0.03 

.06 

.09 

+0.04 

.08 

.11 

+0.05 

.09 

.12 

meter  in 
to 

Ol 

1.0  —A  >-* 

OOlO 

+0.01 

.02 

.02 

+0.01 

.03 

.04 

+0.02 

.04 

.00 

+0.03 

.05 

.07 

+0.04 

.07 

.09 

+0.05 

.03 

.11 

1  r  io, 

60°  U5, 

e  i20*  •  •  • 

+0.00 

.00 

.00 

+0.01 

.01 

.02 

+0.02 

.03 

.04 

+0.02 

.04 

.05 

+0.03 

.05 

.07 

+0.04 

.06 

.09 

Table  B.  —  Conversion  Inches  Water  into  Inches  Mercury. 


Inches 

Water. 

Inches 

Mercury. 

Inches 

Water. 

Inches 

Mercury. 

Inches 

Water. 

Inches 

Mercury. 

Inches 

Water. 

Inches 

Mercury. 

1.0 

0.07 

2.4 

0.18 

3.8 

0.28 

5.2 

0.39 

1.2 

0.09 

2.6 

0.19 

4.0 

0.30 

5.4 

0.40 

1.4 

0.10 

2.8 

0.21 

4.2 

0.31 

5.6 

0.41 

1.6 

0.12 

3.0 

0.22 

4.4 

0.33 

5.8 

0.43 

1.8 

0.13 

3.2 

0.24 

4.6 

0.34 

6.0 

0.44 

2.0 

0.15 

3.4 

0.25 

4.8 

0.36 

0.1 

0.0074 

2.2 

0.16 

3.6 

0.27 

5.0 

0.37 

Total  pressure,  inches. 


Temperature,  Fahrenheit. 


Table  C.  —  Logarithmic  Factors ,  being  Co-Logarithms  i o  reduce  to  Standard  Conditions  0.2  Cubic  Foot  Gas. 


SS‘  S6‘  S7‘ 


7240/25 0/262 
7224/2)4  \?246 
72087218  72)0 


7J9] 

7177 


7201 72 M 
7187  7198 


727272847296 

72867268728/ 
7240  72S2726J? ', 
72287277 72437c 

7209722/7234 


7161  7/7/  7/82 
7/46  7/86  7168 
7/7/714/  7/83 


7//S 


7/oo 


290 


7/90/202 

7/63  7/?S  ?/87\7: 
7/28  7/37  71417199/172  7 
7 32  7/44 7/S6  7> 


7110 


.17069 


7088/098  7/07 
\J079709I 
7084  70647078 
70J9  7049 
7024  7034  7046 


7H7 

7±°L 

7086 

\ gii 

70S6 


300  6. 


93S  6946  C9S7  6 
6920693/  6942 
.  6908 69/6  692 
3  689/  6902  69/3 


.5  m2 68? 9,6884 

.6  68/76888666. 


'663368/4  6888% 
66/9  6830684, 


.9  680/68/8  6826 


58’  S9\6>0‘  6>1  62  63'  (>4‘  (,S*  U*  i?  68'  6? 


730873/7/329  7339 

7290730/  /3/3  732/ 
274/286/2 9£\730£  /)2/ 


7382/7364  7)75/387/400/4/2  7424  7436  7448  746/ 
/ 3 36/ 348/ 389  737/  7384  7396  7m  7420/4 
4  7386  73/6  7380  7393  7404 


259  7271/282 
7243/256 


7/94  7208/2/8/2 

7/19 


5  7009 7020  703/ 

2  69941005  70/6/026/038/05 / 

.7  69/9,6990  700/  70//  702) 

£  6964,6975  6986  6996  700870 2 //c 
.960596/  6972  6982  699 


7305  73/7/328/240/353 

’M 

'/ 286/297/306/32/ 
WMMWK  7306/ 


7254 
14  72/5/228  W9 


725 0\ 
/ 9 9/232/224  7235 


72657277  72907302 

f&M 


7/297/4/  7i 
7// 3 17/ 26  / 


7096/HO  7, 

7083/098 
7068/060  7< 


7256/26872 

3 36/147/158/169  //83  // 93/204/2/ 6  /228/240  7252 

7225] 


35/  7/63/Z73  7/84  7/97  7208  7279  723/  72 

369  77' 

7/537/66 


720. 


7/89  720/  72 


7  7/387/50 
7/237/35 


7/62  7 


7/47 


098  // 


967 697 9\ 

695269645977 

7\69376949\6962 


r  7 087/i 

17072\ 
l  7057/( 

7  7042/053 
-  7027  7038 


322  7/43  7/85 

3777/287/J07/ 

’ 068/079/09/ 7/0 2  7H3  7/25 


106  7/20  7> 
’083/094?/ 057< 


7076  7i 


700/ 

6986 

697/ 

6956 


'O87  7098// /0 
^','U083/095\/l 


7/2 )  7> 


08 


692369355947  __ 

4/8766887  6898  6908  69206991  6942 1954  6965 


7013/014  7034  7045  7057/068/080/ 
-'->054/066  ?i 
5391705/ ?l 

002/0/ 3/0247036 


CjU 


70/9  703/ 
7004  70/7 


68946906  69/8 

9  6880,689/  6904  6. 


'8656677 6889/ 
/  685/686)687. 

7  <8376848666, 


6927  6m  6 \ 

9/3  6924’ 
89869/0 
’868846295 


'989  7 1 
69756987 


704)  70 
7028  70 


7  7064 


7°J1 


696/5973 

6946/958 
6)2/944 
7/9/7  69JO  g 


69846: 


m 

/95s 

6907X69/76990  6 940^959/696]^, 
>1 6876/688/  689)  6903/915  6926 


692/6 \ 


’995/00, 

69805992 

696559/6^. 


69J6 

696/ 


'949  696/ 


70’  7 r  72*  73' 


7445 


73657377738m 


736/  7372  1)85 


W 

’398 

’382  71 


6A?J 


734573567369/ 

3/8  7)30  734/7353 
73/4  7)25  ?3)8 
'298  73/0  7322/335 / 
7295  7)06  7)/9 


7)61 

735/ 


723/72 


1 729/ 

1  7276 
?  7260/27. 


7)04/3/7  7329  7)42  7)55  736/  738/  ? 394 

7289/302  7)14  7)27  7)40  7)52  7365  73/8  7 \ 


V7J  / 185/198/210 7122^/233/245 
7/58  7/70 


72/0/c 

7/82/1947206/218/2)0 


7/9/  72 


7/79 
7/64/176 


72/47, 

7199721, 


1)42/46 

7/20JLLL 


\ 202 
7/88 

7/6/  7/72  7/847/9, 
7/58 
714)  ft 


7/69 

7/55 


?/04  ?//( 
70907/0/. 


70/57 

97060 


'087  70 


TOIL 


94  70%  7 

708/  709) 


'/\7034\70457057 

B030  7042  7054/0 6A 7078/092 \7/0  4  /n6  7/29 

0/6/028/040  7057/061 7921 7089  7L 


'00 2/0/ 3  /0251/1 

w 

&F3 


791170, 


'008 


74*  75°  76*  17*  is*  79*  80* 


82’  83*  84‘  85‘  86*  87' 


89’ 


9J‘\ 92’  93'  94’\95’\%’ 


74867499 

7470  7483  7497/S09  752}  7536/54$  7564/378  7c 
'629/442/454 7467  748/  749 3  7< 


75/3  7525/5)$  7552/565/58/  7594  760 )  7622/6)7\76S2  7666  76807697/7/2 2 

7636  7650  7664  768/ 7695/ 


74)9745/ 
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m 

174 


7465/. 

7449 

7J)4\/4 


4772 


75)9 
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7507/520/53)  7548/56 2/ 


49175037. 

’4/5  2489  7502/5/6 


14762076)476 


5/8\75)2\}546/460\75?4/58^/60)/6/7/6)2/649  }(63  7679/ 

------  j 


747)2 


’486  7500/0 

74/0/484  74 


*  7408/420/434/446/459 

7)92/404  74 IS  74)0  7443/458 
7)64/3777)88  7402  74/4  74237442/455/469 
7)61/37 3 7)87/399/4/2  7426  7439  ?45J 

'74/07424  7437  74 


2f58/57l 


760/ 


>348 

7)32  \7) 457)57/37/ 


75427446  7571/48) 

'2/4267540755 


7526 

S75/2 
1/496/5/0  7524 
74 8/\74 95/509 
7465 


24697 

W4 


mm 


75)8  7 . 


7600/ 

’48' 

7466/ 

’542 


47600 


7646  7 ( 


>63071 


72LL 


'6/6  76)/ 

?6/57i 

’58475)9  76/4/629/6447661/678  .7 

758)  . 


75377, 


7568 

442 


749/  7507  742/  74)7  ?442 


'22/4)5/449  746 ) 

7420  74)41448  74i 

7406  74/874)2  7446/4607476/490/405 /. 
>393  7403/4/6  74)0  7444/460  7, 

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'3/286/ 

>221 


12587, 


>29.8  73/2 

728)  7296/309/32/ 


7408 

>392/406 

7)25/347  7350/363/376 /)90 
'8  736//)747. 

7*T 


'49/ /50S/52J  75)6745/  7566/482/597/6/4 
>420  ?r)A 


7504  75/9  7434/54/7466  758) 
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37250  7263  72 


1)031 


718. 


>240  7253/266/279/29)  \7304\73/7\?JJO 

2/224?, 

7/2/0 

'27/957, 

'181  V/ 93/205 72/8 


7344  7)58  7372 ,7)86/4 


7289 

1/2)57248/260  7273/2877, 
17220723)72-^-^-"-"-' 


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’285 


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7110  7/227/  36  7/46  r 


7/42  ?/66  ?/78//90 7203  72/6  7228/242 
7/88  1201 72/47227/ 
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7281 


’\7254/268  7282  7294/309  7)2)  7)37  7342  7365  ?)8, 
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'/ 09/(22  \?/34  7/467/53 
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7/84/19 ?  77/0  /224 


7/8 / 


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'037/04 
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9/063/ 

’048 

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7 034  ]L 
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'074, 

7060, 

'045 


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7085  709873 


7/4/ 


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1)  7)477)70 & 

734/7354; 


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14/399  74 
7)83  7)98/4/2 


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742774 


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73// 


7)43 


r 

’308  7322  7)37  7)40  7)66  738/  7396  ?. 
>29)  7307  7)22  7))4  7)4/  7)65  7)8/  £ 
7232/350/264/278  7292  7M7)20  7))6/)50  7)66  7 , 
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726772807294 /. 

733172427264/2797, 


7)94 1202  Tin  72347248  731 1  7372  7290  7M  7371 

7/8d\7/9J\7206 72/9 7233.  7248 7262  ?, 


7/64  7/78  7192  7205  7, 
0  7/63  7177/190, 
7/4/ 


1973337 

72/ 
720 ' 


'241 

973)3/3 


7726/7. 

724 ) 


7287 \ 


mi 


?4 3  ??S9\?1 75  7 
72?/74n7S97, 

mwi/ir 


2bC 


17760  2 

’26  7744  ,? 


66/76767624? 
'645766/  7677  7695]  6 


7599  76/3  762976441662 


1646 


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75)5  744075677482  ?498  .2 


1 488740 3  741974)57* 


'45/ 


7447  7472  7487750474/9  75)6  6 

9/443  7447  7472  7488/40)  7420  .7 

7426  7442  7447 747)7481  ?SC4_ _.8 
>4U  7426  744/  7447 747)  7489  ,9 


1/426  74422441 7474\)0  0 
‘  4n  74277441  ? 
>39574/2  7427  7‘ 

>380  7396  74  n  7c 
>) 64  7)8 1  7396  74 


7458  .  / 

'7/44) 

mm 

74/3  .4 


7)34  7)40  7)667)8/  7)98 


7)06X7)2!  73)5/35 1/366  7)8)  .6 

S/06  7)2  /  7)36735'  ~ 


7)06732n)JL; 

1295/30^)2/  l 


3 

7J5JX  8 


Log.  observed  Btu  =  W  +  T  +  F. 

W  =  Log.  Wt.  of  water. 

T  =  Log.  Rise  in  temperature. 
F  =»  Above  factor. 


29 


Table  D.  —  Percentage  of  Humidity  ( Rapid  Ventilation). 


Dry  bulb  reading.  Degrees  Fahrenheit. 


60 

62 

64 

66 

68 

70 

72 

74 

76 

78 

80 

82 

84 

8b 

88 

90 

88 

94 

86 

94 

86 

84 

93 

85 

78 

CD 

PO 

93 

85 

78 

71 

80 

93 

83 

77 

70 

64 

78 

93 

84 

76 

70 

64 

58 

76 

92 

83 

76 

69 

63 

57 

S3 

74 

92 

,83 

76 

68 

63 

56 

52 

46 

72 

92 

83 

75 

68 

63 

55 

50 

46 

42 

70 

92 

82 

74 

67 

62 

54 

49 

44 

40 

36 

68 

90 

82 

73 

66 

60 

54 

47 

44 

38 

35 

31 

66 

90 

82 

73 

65 

58 

53 

47 

43 

37 

33 

29 

26 

64 

90 

80 

72 

64 

57 

52 

46 

42 

36 

33 

27 

25 

23 

62 

90 

80 

72 

63 

57 

50 

44 

39 

35  ' 

30 

27 

24 

21 

17 

60 

89 

79 

70 

62 

55 

48 

43 

37 

33 

28 

25 

23 

18 

16 

13 

58 

89 

79 

70 

62 

54 

47 

42 

36 

32 

27 

24 

20 

16 

15 

12 

9 

56 

79 

69 

6! 

53 

45 

40 

35 

30 

25 

25 

18 

15 

14 

10 

54 

69 

60 

52 

45 

38 

33 

27 

24 

20 

16 

13 

10 

52 

58 

49 

43 

37 

31 

25 

22 

17 

14 

It 

50 

49 

41 

35 

30 

23 

20 

15 

12 

Table  E.  —  Corrections  for  Humidity  in  B.  T.  U. 

Percentage  of  humidity. 


10% 

20* 

30 

40 

50 

60 

70 

80 

90 

60° 

+  4 

+4 

+  3 

+2 

+  2 

+  1 

+  1 

0 

0 

65 

+  5 

+  4 

+4 

+  3 

+  2 

+  2 

+ 1 

0 

-I 

70 

+  6 

+  5 

+4 

+3 

+3 

+  2 

+ 1 

0 

-1 

75 

♦  7 

+  6 

+  5 

+4 

+3 

+2 

+  1 

0 

-  1 

80 

+  8 

+  7 

+  6 

+  5 

+  3 

+  2 

+  1 

0 

-  1 

85 

+  10 

+  9 

+  7 

+  6 

+4 

+  3 

+  2 

0 

-  1 

90 

+  12 

+  10 

'‘+9 

+  7 

+  5 

+4 

+  2 

0 

-2 

Humidity. 


30 


Appendix  F. 


Efficiency  Factors  for  Coal  and  Oil,  July,  1916,  to  October,  1917. 


Company. 

B.  T.  U.  Feet. 

Oil  Factor. 

Boston . 

- 

109 

Brockton,  . 

3,289 

112 

Cambridge, . 

3,176 

105 

Charlestown, . 

3,209 

- 

Fall  River . 

3,146 

109 

Fitchburg, . 

3,064 

106 

Haverhill, . 

- 

110 

Holyoke, . 

2,826 

111 

Lowell, . 

3,201 

100 

Lynn . 

2,962 

107 

Malden, . 

2,666 

106 

New  Bedford, . 

3,002 

105 

Old  Colony, . 

- 

109 

Springfield, . 

2,913 

101 

Taunton, . 

2,980 

- 

Worcester, . 

2,882 

104 

31 


Appendix  G. 


I.  Tabulation  of  weekly  reports  and  averages  made  by  gas 
companies,  showing  averages  by  weeks  of  quality  of  commercial 
gas  at  testing  stations  and  of  the  constituent  gases  at  works 
stations;  for  the  period  from  July  1,  1916,  to  October  1,  1917. 

II.  Inspection  results  by  State  inspectors  and  company  av¬ 
erages  reported  for  week  during  which  the  official- test  was  made 
for  the  same  period. 

III.  Curves  Btu's  for  year  ending  June  30,  1917. 

Tabulation  of  Weekly  Reports  and  Averages. 

Attleboro. 

The  only  results  reported  are  of  Btu  for  commercial  gas,  as 
follows :  — 


Commercial 

Commercial 

Commercial 

Commercial 

Commercial 

Commercial 

Commercial 

B.  T.  U. 

B.  T.  U. 

B.  T.  U. 

B.  T.  U. 

B.  T.  U. 

B.  T.  U. 

B.  T.  U. 

624 

611 

611 

610 

609 

634 

608 

622 

610 

606 

609 

611 

622 

598 

605 

608 

604 

623 

625 

633 

614 

611 

611 

607 

618 

617 

603 

607 

613 

613 

608 

630 

618 

598 

618 

613 

597 

622 

614 

602 

607 

626 

602 

617 

636 

594 

603 

632 

621 

626 

620 

Boston. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

HjO. 

B.T.U. 

Candle 

Power. 

640 

17.1 

- 

- 

2.92 

538 

106 

16.2 

50.8 

595 

16.7 

638 

17.3 

- 

- 

3.02 

535 

102 

15.9 

50.0 

586 

16.3 

645 

17.2 

- 

- 

3.01 

538 

102 

15.9 

51.9 

585 

16.3 

636 

17.2 

- 

- 

2.77 

521 

104 

14.8 

52.3 

582 

16.3 

32 


Boston  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

HzO. 

B.T.U. 

Candle 

Power. 

623 

17.3 

- 

- 

2.75 

517 

101 

15.5 

56.3 

564 

16.3 

625 

17.2 

- 

- 

2.66 

518 

106 

15.8 

57.4 

563 

16.2 

617 

17.4 

- 

- 

2.66 

512 

104 

15.5 

64.6 

568 

16.2 

616 

17.1 

- 

- 

2.69 

519 

105 

15.4 

59.4 

5G4 

16.1 

620 

17.1 

- 

- 

2.65 

513 

108 

15.5 

59.6 

576 

16.1 

655 

17.1 

- 

- 

2.68 

516 

105 

.15.4 

58.2 

587 

16.1 

625 

17.1 

- 

- 

2.57 

526 

109 

15.4 

59.0 

576 

16.0 

620 

17.0 

- 

- 

2.82 

540 

109 

15.4 

59.8 

581 

15.9 

630 

17.0 

- 

2.89 

534 

105 

15.9 

59.9 

583 

16.1 

629 

17.1 

- 

- 

2.92 

545 

108 

16.1 

60.2 

584 

16.4 

616 

16.9 

- 

- 

2.92 

546 

108 

16.7 

60.8 

589 

16.6 

641 

16.9 

- 

- 

3.07 

548 

105 

16.5 

60.5 

589 

16.4 

657 

17.3 

- 

- 

2.94 

552 

109 

17.0 

59.6 

595 

17.0 

648 

17.1 

- 

- 

2.82 

538 

108 

17.0 

59.1 

587 

17.0 

630 

17.2 

- 

- 

2.80 

536 

108 

16.7 

62.6 

573 

16.9 

613 

16.9 

- 

- 

3.25 

565 

106 

17.0 

61.5 

585 

16.9 

601 

17.1 

- 

- 

3.09 

557 

107 

17.4 

57.0 

593 

17.0 

612 

17.2 

- 

- 

2.67 

533 

113 

17.1 

58.0 

579 

17.0 

613 

17.1 

- 

- 

2.80 

544 

111 

17.0 

59.8 

572 

17.0 

627 

17.2 

- 

- 

2.74 

537 

111 

16.9 

59.4 

581 

17.0 

624 

17.1 

- 

- 

2.77 

537 

111 

16.9 

59.4 

579 

17.0 

628 

17.0 

- 

- 

2.84 

537 

107 

16.9 

60.0 

573 

16.9 

611 

16.9 

- 

- 

3.13 

559 

107 

17.2 

62.6 

578 

17.0 

624 

17.1 

- 

- 

2.96 

543 

106 

17.1 

61.2 

574 

16.9 

634 

17.1 

- 

- 

2.83 

543 

110 

17.1 

58.9 

577 

17.1 

632 

17.2 

- 

- 

2.81 

537 

108 

16.5 

59.6 

572 

16.8 

627 

17.1 

- 

- 

2.86 

540 

108 

16.5 

58.4 

573 

16.7 

634 

17.3 

- 

- 

2.67 

526 

109 

16.2 

55.5 

578 

16.8 

638 

16.9 

- 

- 

2.77 

5^3 

108 

16.1 

60.3 

568 

16.4 

630 

17.3 

- 

- 

2.82 

537 

108 

16.7 

59.2 

580 

17.0 

628 

16.6 

- 

- 

2.48 

527 

115 

15.4 

58.3 

579 

16.0 

638 

17.1 

- 

- 

2.57 

530 

114 

15.4 

56.5 

586 

16.2 

655 

17.2 

- 

- 

2.65 

535 

113 

15.7 

56.5 

580 

16.4 

654 

17.0 

- 

- 

2.69 

535 

112 

16.0 

56.4 

589 

16.4 

637 

16.8 

- 

- 

2.57 

543 

119 

16.4 

58.0 

587 

16.8 

33 


Boston  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

630 

17.1 

- 

- 

2.58 

534 

115 

16.2 

56.9 

582 

16.7 

643 

17.1 

- 

- 

2.54 

542 

119 

16.1 

60.2 

579 

16.7 

652 

17.1 

- 

- 

2.74 

539 

111 

15.8 

58.3 

584 

16.5 

629 

16.6 

- 

- 

2.55 

531 

116 

15.5 

58.8 

579 

16.1 

636 

16.6 

- 

- 

2.58 

538 

116 

15.5 

59.5 

591 

15.9 

652 

16.1 

- 

- 

2.67 

544 

115 

15.6 

57.8 

589 

15.7 

643 

17.0 

- 

- 

2.59 

543 

118 

16.2 

57.4 

595 

16.5 

657 

17.0 

- 

- 

2.66 

550 

118 

16.1 

58.9 

593 

16.6 

655 

17.2 

- 

- 

2.62 

537 

116 

15.8 

54.2 

595 

16.6 

641 

17.1 

- 

- 

2.62 

529 

112 

15.6 

54.3 

583 

16.3 

654 

17.0 

- 

- 

2.62 

529 

112 

15.4 

52.3 

590 

15.7 

635 

15.9 

- 

- 

2.61 

535 

114 

14.9 

53.4 

584 

15.2 

623 

15.3 

- 

- 

2.62 

539 

115 

14.5 

44.9 

589 

14.8 

605 

15.2 

- 

- 

2.60 

532 

113 

14.9 

53.5 

569 

14.7 

609 

15.1 

- 

- 

2.65 

537 

114 

15.2 

55.6 

569 

14.8 

620 

15.2 

- 

- 

2.83 

555 

114 

16.2 

53.8 

586 

15.5 

606 

15.0 

- 

- 

2.69 

548 

116 

15.8 

54.9 

576 

15.2 

608 

14.1 

- 

- 

2.69 

520 

110 

15.3 

56.1 

567 

14.7 

601 

13.8 

- 

- 

2  66 

529 

110 

14.7 

59.5 

558 

13.9 

594 

13.6 

- 

- 

2.74 

540 

111 

15.1 

56.5 

564 

14.1 

582 

13.4 

- 

- 

2.72 

548 

115 

15.2 

57.5 

561 

13.8 

629 

16.6 

- 

- 

2.75 

537 

109 

16.0 

57.5 

580 

16.2 

Brockton . 


- 

15.0 

5.60 

- 

2.94 

- 

- 

17.6 

55.0 

567 

15.1 

* 

15  4 

5.41 

- 

3  00 

- 

- 

18.0 

54.0 

567 

- 

574 

15.6 

5.35 

3,071 

3.14 

566 

103 

18.6 

55.0 

574 

14.8 

571 

15.2 

5.87 

3,352 

3.00 

584 

119 

19.0 

59.0 

565 

16  0 

581 

13.7 

5.98 

3,474 

2.83 

558 

115 

17.2 

54.0 

558 

15.9 

568 

14  5 

5.83 

3,311 

2.89 

555 

111 

17.0 

50.2 

554 

15.9 

570 

14.9 

5  99 

3,414 

2.94 

568 

115 

17.4 

50.0 

553 

16.0 

573 

14.2 

6.08 

3,484 

2.66 

570 

102 

16.7 

45.0 

561 

15.8 

581 

15.5 

5.54 

3,219 

2.76 

553 

116 

16.1 

47.5 

555 

16.0 

582 

13.7 

5.76 

3,352 

2.84 

560 

116 

16.6 

44.7 

555 

15.6 

34 


Brockton  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

1 

Candle 

Power. 

598 

14.5 

5.89 

3,522 

2.65 

556 

121 

17.4 

48.1 

553 

15.0 

575 

13.2 

5.94 

3,416 

2.66 

557 

121 

15.7 

48.3 

549 

14.3 

5S9 

14.1 

5.83 

3,434 

2.90 

564 

115 

17.1 

48.2 

554 

14.2 

592 

13.9 

6.06 

3,588 

2.93 

560 

112 

16.7 

51.6 

559 

13.5 

595 

14.5 

5.82 

3,463 

2.86 

552 

112 

17.0 

51.4 

563 

14.1 

587 

13.3 

5.S5 

3,434 

2.93 

549 

109 

16.2 

49.0 

559 

13.3 

591 

14.6 

5.74 

3,392 

2.90 

597 

127 

16.6 

55.3 

553 

13.5 

604 

14.5 

5.65 

3,413 

2.99 

551 

108 

16.6 

52.0 

555 

13.7 

601 

14.6 

5.59 

3,360 

3.01 

571 

118 

18.0 

53.4 

555 

13.7 

589 

14.1 

5.90 

3,475 

2.66 

567 

124 

17.1 

57.4 

551 

13.5 

596 

14.5 

5.57 

3,320 

2.86 

00 

111 

17.2 

50.8 

549 

13.0 

586 

14.2 

5.86 

3,434 

2.91 

550 

110 

17.8 

50.0 

542 

12.7 

586 

14.4 

5.78 

3,387 

2.98 

556 

110 

17.9 

50.8 

553 

13.1 

578 

12.8 

5.84 

3,376 

2.99 

558 

110 

19.0 

51.1 

552 

13.5 

581 

14.1 

5.88 

3,416 

2.97 

573 

116 

18.2 

48.2 

553 

13.1 

572 

12.9 

5.98 

3,421 

2.81 

548 

112 

18.0 

47.0 

553 

13.4 

569 

13.2 

5.86 

3,330 

2.81 

551 

113 

17.6 

45.5 

548 

13.2 

552 

14.9 

5.43 

2,997 

3  14 

557 

106 

20.2 

41.9 

546 

13.5 

564 

14.2 

5.44 

3,068 

3.12 

559 

107 

19.2 

45.0 

566 

13.3 

562 

14.1 

5.48 

3,080 

3.25 

573 

108 

19.2 

41.3 

566 

13.5 

576 

14.5 

5.57 

3,208 

3.22 

558 

104 

19.3 

40.8 

565 

13.9 

584 

14.4 

5.81 

3,393 

2.76 

550 

115 

16.8 

40.6 

559 

13.3 

579 

14.4 

5.78 

3,347 

2.91 

552 

111 

17.4 

43.1 

554 

13.6 

574 

14.2 

5.83 

3,346 

2.92 

532 

104 

17.3 

43.1 

552 

13.4 

573 

14.1 

5.70 

3,266 

2.94 

553 

110 

18.0 

44.2 

556 

12.8 

580 

14.2 

5.75 

3,335 

2.82 

534 

107 

17.6 

40.6 

556 

13.6 

589 

14.5 

5.74 

3,381 

2.89 

560 

114 

17.6 

42.0 

558 

13.0 

578 

12.7 

5.79 

3,347 

2.75 

546 

114 

16.3 

42.8 

551 

12.9 

578 

13.0 

5.89 

3,404 

2.98 

552 

108 

15.0 

44.5 

553 

13.2 

575 

14.0 

5.79 

3,329 

3.00 

558 

110 

18.1 

45.7 

549 

13.6 

574 

13.1 

5.69 

3,266 

3.37 

581 

108 

20.4 

58.8 

561 

13.6 

610 

13.0 

5.72 

3,489 

2.81 

544 

110 

13.8 

51.6 

560 

13.4 

602 

13.2 

5.68 

3,419 

2.85 

545 

no 

17.5 

49.8 

549 

13.2 

593 

13.1 

5.66 

3,356 

2.95 

544 

107 

17.6 

50.6 

552 

13.8 

598 

12.6 

5.62 

3,364 

2.96 

551 

109 

17.6 

50.5 

569 

13.5 

35 


Brockton  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

558 

12.4 

5.54 

3,258 

3.29 

588 

112 

20.3 

51.6 

574 

13  2 

601 

12.3 

5.51 

3,312 

2.85 

558 

114 

17.2 

53.2 

571 

13.5 

584 

12.8 

5.51 

3,218 

3.05 

549 

106 

18.3 

56.4 

569 

13.6 

602 

12.8 

5.35 

3,221 

3.24 

559 

104 

19.8 

66.1 

577 

13.7 

543 

12.8 

5.25 

2,851 

2.97 

595 

124 

18.4 

76.8 

580 

13.4 

474 

12.7 

4.67 

2,214 

3.08 

578 

114 

18.8 

77.9 

557 

13.5 

564 

13.0 

5.36 

3,023 

3.24 

605 

118 

19.5 

70.9 

575 

14.3 

548 

12.9 

5.34 

2,926 

2.83 

557 

115 

17.1 

73.0 

561 

14.1 

583 

12.1 

5.48 

3,195 

2.98 

560 

111 

17.9 

71.8 

558 

14.4 

584 

12.9 

5.43 

3,171 

3.14 

'  575 

111 

18.7 

78.1 

570 

13.8 

582 

13.1 

5.52 

3,213 

3.19 

580 

112 

19.2 

76.2 

576 

13.9 

566 

13.5 

5.42 

3,068 

3.01 

551 

104 

18.1 

80.0 

555 

12.8 

578.5 

13.8 

5.67 

3,289 

2.98 

560 

112 

17.7 

51.2 

559 

13.8 

Cambridge. 


584 

13.8 

5.45 

3,183 

2.36 

- 

- 

- 

20.9 

570 

14.7 

592 

- 

5.33 

3,155 

2.20 

485 

108 

10.7 

23.0 

566 

14.6 

588 

14.9 

5.33 

3,134 

2.02 

477 

113 

9.5 

25.9 

555 

14.1 

595 

15.0 

5.44 

3,233 

0.53 

355 

128 

1.5 

17.3 

563 

14.3 

588 

15.0 

5.34 

3,140 

2.00 

473 

111 

5.9 

29.6 

555 

13.5 

590 

15.5 

5.33 

3,145 

1.82 

448 

105 

10.5 

25.6 

557 

13.8 

596 

15.6 

5.53 

3,296 

1.28 

403 

105 

- 

21.5 

558 

13.6 

596 

15.6 

5.57 

3,320 

2.52 

506 

110 

12.8 

32.2 

559 

14.0 

598 

15.6 

5.48 

3,277 

2.00 

468 

108 

7.6 

27.5 

555 

13.3 

594 

15.1 

5.33 

3,166 

2.15 

473 

105 

7.8 

29.5 

556 

13.9 

593 

15.4 

5.16 

3,060 

2.12 

476 

107 

8.0 

28.7 

555 

13.4 

589 

14.3 

5.28 

3,110 

2.41 

504 

109 

11.1 

29.4 

561 

13.8 

593 

15.0 

5.29 

3,137 

2.27 

494 

110 

9.3 

23.7 

568 

14.6 

592 

15.3 

5.24 

3,102 

2.41 

497 

106 

9.3 

23.0 

569 

14.1 

595 

15.5 

5.29 

3,148 

2.54 

536 

117 

14.0 

19.3 

577 

14.6 

597 

14.9 

5.23 

3,122 

3.09 

557 

104 

16.0 

26.0 

581 

14.4 

596 

15.2 

5.52 

3,290 

3.28 

580 

110 

17.7 

19.4 

587 

15.0 

597 

14.4 

5.55 

3,313 

3.48 

597 

109 

19.1 

21.0 

591 

15.4 

601 

15.1 

5.41 

3,250 

3.17 

565 

108 

16.3 

23.8 

587 

14.7 

36 


Cambridge  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

597 

15.1 

5.49 

3,278 

2.81 

544 

115 

15.4 

31.8 

583 

15.0 

593 

14.9 

5.34 

3,167 

2.77 

524 

106 

13.4 

35.1 

575 

14.2 

599 

14.6 

5.10 

3,055 

2.83 

538 

108 

14.4 

39.3 

579 

14.8 

601 

14.6 

5.25 

3,155 

2.67 

532 

112 

14.1 

42.2 

573 

14.5 

598 

13.7 

5.29 

3,163 

2.98 

548 

105 

15.3 

35.9 

576 

14.4 

600 

14.3 

5.22 

3,132 

2.83 

543 

110 

14.6 

37.0 

576 

14.6 

609 

14.5 

5.12 

3,118 

2.66 

531 

111 

13.9 

37.8 

573 

14.3 

617 

15.3 

5.13 

3,165 

2.56 

521 

111 

12.7 

36.8 

574 

14.5 

609 

14.9 

5.41 

3,295 

2.77 

539 

111 

14.1 

36.6 

575 

14.1 

602 

14.3 

5.37 

3,233 

2.60 

516 

108 

12.6 

29.3 

571 

14.2 

596 

14.8 

5.27 

3,141 

2.66 

522 

110 

13.2 

30.9 

573 

14.3 

584 

14.3 

5.15 

3,008 

2.80 

517 

103 

12.2 

35.4 

571 

14.1 

593 

14.9 

5.46 

3,238 

2.52 

522 

112 

12.7 

30.1 

572 

14.3 

592 

14.1 

5.75 

3,404 

2.52 

512 

109 

11.1 

32.7 

561 

13.9 

598 

14.9 

5.62 

3,351 

2.38 

503 

113 

10.2 

31.7 

565 

14.1 

600 

14.1 

5.15 

3,090 

2.67 

505 

101 

10.5 

32.2 

560 

13.6 

609 

15.1 

5.10 

3,159 

2.50 

497 

103 

9.7 

31.9 

562 

14.1 

596 

14.9 

5.38 

3,206 

2.58 

505 

104 

10.2 

34.5 

553 

13.6 

602 

15.6 

5.31 

3,197 

2.34 

496 

108 

10.1 

30.1 

559 

13.4 

611 

14.9 

5.37 

3,281 

2.23 

495 

112 

9.8 

30.5 

564 

13.8 

601 

14.4 

5.57 

3,348 

2.38 

500 

108 

9.3 

28.7 

564 

13.5 

599 

14.4 

5.58 

3,342 

2.39 

506 

110 

10.2 

22.5 

569 

13.7 

613 

15.1 

5.40 

3,310 

2.31 

514 

117 

9.8 

21.5 

569 

13.5 

593 

13.6 

5.17 

3,066 

2.77 

512 

101 

12.0 

36.3 

559 

13.3 

604 

15.2 

5.17 

3,123 

2.63 

503 

101 

11.7 

36.6 

563 

13.6 

595 

14.3 

5.42 

3,225 

2.56 

513 

108 

12.2 

34.9 

563 

13.9 

599 

14.9 

5.48 

3,283 

2.42 

493 

104 

11.1 

31.5 

560 

13.7 

588 

14.0 

5.64 

3,316 

2.25 

476 

102 

9.7 

32.2 

558 

13.4 

587 

14.0 

5.62 

3,299 

1.97 

454 

103 

8.1 

28.9 

550 

13.0 

591 

14.8 

5.50 

3,251 

1.97 

437 

118 

- 

24.9 

551 

13.0 

595 

14.8 

5.45 

3,242 

1.59 

427 

104 

- 

21.0 

551 

12.5 

608 

15.6 

5.32 

3,235 

1.32 

403 

103 

- 

20.0 

564 

12.6 

585 

13.6 

5.54 

3,208 

0.09 

309 

123 

- 

13.6 

554 

12.3 

591 

14.5 

5.37 

3,174 

2.74 

481 

90 

11.0 

20.9 

565 

12.4 

597 

14.9 

5.13 

3,063 

2.08 

451 

97 

9.4 

21.1 

568 

13.3 

37 


Cambridge  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

600 

15.4 

5.18 

3,108 

1.86 

438 

98 

6.7 

23.3 

558 

13.0 

597 

14.8 

5.33 

3,182 

2.10 

461 

100 

7.7 

27.2 

553 

13.6 

583 

14.2 

5.43 

3,166 

2.44 

488 

101 

9.4 

28.7 

554 

13.1 

578 

13.4 

5.30 

3,063 

2.61 

,  518 

108 

12.2 

28.7 

548 

12.9 

586 

14.2 

5.37 

3,147 

2.57 

509 

106 

12.3 

33.5 

560 

13.6 

585 

13.2 

5.12 

2,995 

2.52 

520 

111 

12.8 

36.6 

557 

13.6 

596 

14.5 

5.35 

3,176 

2.31 

487 

105 

10.9 

28.7 

565 

13.8 

Charlestown. 


611 

16.8 

5.26 

3,215 

- 

- 

- 

- 

- 

- 

- 

612 

16.7 

5.30 

3,243 

- 

- 

- 

- 

- 

- 

- 

617 

16.6 

5.27 

3,251 

- 

- 

- 

- 

- 

- 

- 

607 

16.5 

5.40 

3,297 

- 

- 

- 

- 

- 

- 

617 

16.7 

5.45 

3,362 

- 

- 

- 

- 

- 

- 

630 

16.7 

5.58 

3,514 

- 

- 

- 

- 

- 

- 

- 

625 

17.0  ‘ 

5.38 

3,365 

- 

- 

- 

- 

- 

- 

- 

620 

16.9 

5.22 

3,236 

- 

- 

- 

- 

- 

- 

- 

630 

16.8 

5.38 

3,393 

- 

- 

- 

- 

- 

- 

- 

615 

16.4 

5.25 

3,228 

- 

- 

- 

- 

'  - 

- 

- 

617 

16.6 

5.38 

3,319 

- 

- 

- 

- 

- 

- 

- 

620 

16.9 

5.50 

3,413 

- 

- 

- 

- 

- 

- 

- 

619 

16.9 

5.50 

3,404 

- 

- 

- 

- 

- 

- 

- 

616 

17.0 

5.26 

3,239 

- 

- 

- 

- 

- 

- 

- 

622 

17.0 

5.44 

3,383 

- 

- 

- 

- 

- 

- 

- 

612 

17.0 

5.44 

3,328 

- 

- 

- 

- 

-  . 

- 

- 

606 

16.8 

5.15 

3,121 

- 

- 

- 

- 

- 

- 

- 

602 

16.8 

5.11 

3,078 

- 

- 

- 

- 

- 

- 

- 

601 

16.5 

5.11 

3,072 

- 

- 

- 

- 

- 

- 

- 

602 

16.7 

4.91 

2,958 

- 

- 

- 

- 

- 

- 

- 

609 

16.8 

5.04 

3,067 

- 

- 

- 

- 

- 

- 

- 

597 

16.8 

5.21 

3,109 

- 

- 

- 

- 

- 

- 

- 

596 

16.6 

5.05 

3,011 

- 

- 

- 

- 

- 

- 

- 

602 

16.9 

5.11 

3,075 

- 

- 

- 

- 

- 

- 

- 

596 

16.7 

5.24 

3,124 

- 

- 

- 

- 

38 


Charlestown  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

597 

17.2 

5.28 

3,151 

- 

- 

- 

- 

- 

- 

- 

608 

17.1 

5.05 

3,341 

- 

- 

- 

- 

- 

- 

- 

616 

17.2 

5.05 

3,111 

- 

- 

- 

- 

- 

- 

- 

602 

17.1 

5.15 

3,099 

- 

, 

- 

- 

- 

- 

603 

17.2 

5.03 

3,032 

- 

- 

- 

- 

- 

- 

- 

618 

16.6 

5.05 

3,122 

- 

- 

- 

- 

- 

- 

- 

609 

16.7 

5.04 

3,069 

- 

- 

- 

- 

- 

- 

- 

611 

16.8 

5.27 

3,209 

- 

- 

- 

- 

- 

- 

- 

East  Boston. 


- 

- 

5.20 

- 

3.15 

- 

- 

20.8 

73.0 

586 

16.8 

- 

- 

5.20 

- 

3.28 

- 

- 

20.2 

70.0 

572 

16.5 

- 

- 

5.36 

- 

3.25 

- 

- 

20.1 

72.0 

576 

16.4 

- 

- 

5.40 

- 

2.70 

- 

- 

18.6 

71.0 

549 

14.3 

- 

- 

5.00 

- 

2.86 

- 

- 

18.0 

72.0 

548 

15.7 

- 

- 

5.66 

- 

2.70 

- 

- 

19.0 

71.0 

542 

14.9 

- 

- 

5.30 

- 

2.80 

- 

- 

18.9 

68.0 

550 

15.5 

- 

- 

5.60 

- 

2.50 

- 

- 

18.3 

70.0 

534 

15.2 

- 

5.40 

- 

2.66 

- 

- 

19.0 

72.0 

550 

15.6 

- 

- 

5.53 

- 

2.70 

- 

- 

18.9 

72.0 

550 

14.4 

- 

- 

5.80 

- 

2.80 

- 

- 

18.5 

71.0 

534 

15.1 

- 

- 

5.50 

- 

2.60 

- 

- 

16.1 

68.0 

542 

15.0 

- 

- 

5.35 

- 

2.68 

- 

- 

17.9 

73.0 

542 

15.0 

- 

- 

5.25 

- 

2.47 

- 

- 

17.3 

75.0 

526 

14.5 

- 

- 

5.72 

- 

2.55 

- 

- 

14.4 

71.0 

525 

14.0 

- 

- 

5.00 

- 

2.60 

- 

- 

14.5 

75.0 

527 

12.5 

- 

- 

5.20 

- 

2.60 

- 

- 

14.0 

72.0 

525 

12.0 

- 

- 

5.10 

- 

2.70 

- 

- 

15.1 

74.0 

524 

13.0 

- 

- 

5.26 

- 

2.76 

- 

- 

16.1 

73.0 

526 

11.6 

- 

- 

5.30 

- 

2.70 

- 

- 

15.7 

74.0 

522 

12.8 

- 

- 

5.40 

- 

2.90 

- 

- 

16.6 

70.0 

521 

12.5 

- 

- 

5.17 

- 

2.73 

- 

- 

14.4 

71.0 

535 

13.4 

- 

- 

4.86 

- 

2.57 

- 

- 

14.5 

74.0 

534 

13.3 

- 

- 

4.80 

- 

2.59 

- 

- 

15.3 

73.0 

536 

14.2 

39 


East  Boston  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

- 

- 

4.52 

- 

2.71 

- 

- 

16.2 

77.0 

546 

14.4 

- 

- 

4.83 

- 

2.72 

- 

- 

18.4 

81.0 

534 

15.2 

- 

- 

5.10 

- 

2.56 

- 

- 

17.2 

76.0 

522 

14.7 

- 

4.88 

- 

3.06 

- 

- 

17.7 

88.0 

538 

15.8 

- 

- 

4.99 

- 

2.61 

- 

- 

16.5 

69.0 

534 

13.8 

- 

- 

4.53 

- 

2.69 

- 

- 

15.4 

77.0 

517 

12.5 

- 

- 

4.84 

- 

2.77 

- 

- 

16.9 

74.0 

528 

14.7 

T- 

- 

4.99 

- 

2.95 

- 

- 

15.6 

70.0 

520 

13.1 

- 

- 

4.65 

- 

2.83 

- 

- 

16.5 

75.0 

527 

13.5 

- 

4.82 

- 

2.85 

- 

- 

15.5 

71.0 

515 

13.0 

- 

- 

4.54 

- 

2.73 

- 

- 

18.2 

86.0 

519 

14.9 

- 

- 

4.66 

- 

2.70 

- 

- 

18.1 

85.0 

521 

14.4 

- 

- 

4.58 

- 

2.95 

- 

- 

17.9 

80.0 

523 

14.2 

- 

- 

5.34 

- 

2.87 

- 

- 

18.0 

84.0 

- 

-  ' 

- 

- 

4.91 

- 

2.90 

- 

- 

19.0 

85.0 

534 

15.9 

- 

- 

5.31 

- 

2.87 

- 

- 

18.1 

83.0 

551 

14.5 

- 

- 

5.57 

- 

2.93 

- 

- 

18.2 

83.0 

538 

14.9 

- 

- 

5.08 

- 

2.86 

- 

- 

18.0 

83.0 

543 

14.9 

- 

- 

5.08 

- 

2.95 

- 

- 

18.4 

84.0 

551 

15.5 

- 

- 

5.46 

- 

2.91 

- 

18.0 

82.0 

546 

14.7 

- 

- 

5.40 

- 

2.90 

- 

- 

19.9 

84.0 

548 

15.1 

- 

- 

5.70 

- 

2.91 

- 

- 

19.9 

83.0 

549 

15.6 

- 

- 

5.00 

- 

3.00 

- 

- 

19.2 

84.0 

534 

15.4 

- 

- 

5.10 

- 

3.10 

- 

- 

19.2 

85.0 

545 

15.2 

- 

- 

5.30 

- 

2.90 

- 

- 

18.7 

83.0 

529 

14.6 

- 

- 

5.30 

- 

2.89 

- 

- 

18.9 

84.0 

546 

15.4 

- 

- 

5.07 

- 

2.94 

- 

- 

18.9 

85.0 

532 

14.8 

" 

- 

5.15 

- 

2.78 

- 

- 

17.5 

76.6 

537 

14.5 

40 


Fall  River . 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

565 

15.0 

5.67 

3,200 

2.81 

545 

Ill 

19.1 

- 

548 

15.3 

551 

14.2 

5.63 

3,100 

2.88 

556 

113 

18.6 

554 

15.2 

573 

15.1 

5.65 

3,240 

2.89 

540 

107 

18.7 

- 

563 

16.7 

564 

15.0 

5.66 

3,190 

2.86 

534 

106 

18.4 

- 

565 

- 

- 

14.9 

5.71 

- 

2.94 

533 

103 

18.5 

47.0 

549 

14.5 

553 

15.9 

5.72 

3,163 

2.99 

558 

110 

18.4 

47.3 

563 

15.4 

580 

16.3 

5.69 

3,295 

2.86 

541 

108 

17.3 

48.0 

562 

15.7 

567 

15.8 

5.59 

3,165 

3.00 

546 

106 

17.3 

51.0 

553 

J5.3 

553 

15.1 

5.84 

3,220 

3.06 

558 

108 

17.7 

50.7 

550 

15.1 

543 

14.9 

5.67 

3,075 

3.02 

558 

108 

17.8 

51.6 

561 

- 

560 

15.4 

5.83 

3,265 

2.89 

533 

101 

17.9 

50.7 

556 

14.9 

561 

16.3 

5.68 

3,185 

2.96 

556 

110 

18.3 

48.1 

560 

15.5 

564 

15.7 

5.87 

3,310 

3.11 

548 

102 

18.3 

48.4 

562 

15.1 

568 

15.3 

5.62 

3,190 

3.00 

550 

107 

18.2 

48.2 

563 

14.6 

567 

15.7 

5.66 

3,205 

3.05 

553 

107 

18.1 

47.3 

556 

14.2 

566 

15.7 

5.67 

3,210 

3.16 

- 

- 

18.0 

46.6 

562 

14.2 

551 

15.2 

5.80 

3,195 

3.08 

549 

105 

17.8 

44.1 

555 

14.2 

560 

15.7 

5.67 

3,175 

2.95 

550 

109 

17.7 

48.0 

556 

14.1 

559 

16.0 

5.82 

3,255 

2.88 

- 

- 

17.5 

46.0 

556 

14.1 

563 

15.5 

5.52 

3,108 

3.01 

549 

107 

17.9 

48.9 

547 

13.7 

560 

15.6 

5.72 

3,145 

3.12 

- 

- 

17.6 

50.5 

553 

14.2 

558 

15.4 

5.79 

3,235 

2.92 

- 

- 

17.8 

48.7 

554 

14.8 

560 

16.4 

5.60 

3,135 

2.92 

- 

- 

17.8 

48.9 

557 

15.4 

573 

16.3 

5.35 

3,065 

2.96 

- 

- 

17.7 

50.4 

559 

14.9 

576 

15.6 

5.46 

3,145 

3.02 

- 

- 

17.6 

50.8 

552 

14.2 

566 

15.8 

5.58 

3,160 

3.03 

- 

- 

17.3 

50.5 

560 

14.3 

563 

15.5 

5.59 

3,145 

3.04 

- 

- 

17.2 

45.5 

553 

13.9 

574 

15.7 

5.07 

2,910 

3.11 

- 

- 

17.5 

53.4 

561 

14.1 

577 

15.7 

5.01 

2,890 

2.98 

- 

- 

17.1 

56.2 

561 

14.4 

569 

15.9 

5.30 

3,015 

3.10 

- 

- 

17.2 

46.4 

563 

14.7 

569 

16.3 

5.50 

3,130 

3.00 

- 

- 

16.9 

46.7 

562 

14.8 

570 

16.1 

5.52 

3,145 

3.04 

- 

- 

16.9 

44.0 

560 

14.6 

551 

14.9 

5.84 

3,215 

3.03 

- 

- 

16.9 

42.5 

546 

13.7 

543 

14.7 

5.78 

3,140 

2.97 

- 

- 

16.6 

42.5 

548 

13.7 

541 

14.8 

5.58 

3,020 

2.96 

- 

- 

16.8 

43.2 

552 

13.9 

41 


Fall  River  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

.  Per 
Cent. 
H20. 

B.T.U. 

Candle 

Power. 

554 

15.4 

5.51 

3,050 

3.01 

- 

- 

16.7 

44.6 

553 

13.8 

545 

14.9 

5.70 

3,110 

3.02 

- 

- 

16.8 

43.8 

544 

- 

541 

14.8 

5.70 

3,080 

3.10 

- 

- 

16.8 

45.9 

544 

- 

542 

14.8 

5.69 

3,090 

3.09 

- 

- 

16.8 

45.2 

528 

- 

- 

14.6 

5.71 

- 

2.99 

- 

- 

16.8 

43.1 

535 

- 

- 

14.9 

5.68 

- 

2.95 

- 

- 

16.8 

45.6 

532 

- 

580 

15.5 

5.79 

3,360 

2.93 

- 

- 

16.7 

46.8 

515 

- 

536 

14.1 

5.66 

3,065 

2.90 

- 

- 

16.7 

50.1 

539 

- 

543 

14.6 

5.66 

3,075 

2.90 

- 

- 

16.5 

53.0 

555 

- 

553 

14.3 

5.70 

3,150 

2.85 

- 

- 

16.1 

52.4 

547 

- 

553 

14.4 

5.79 

3,200 

2.79 

- 

- 

16.2 

50.0 

548 

- 

566 

15.8 

5.52 

3,125 

2.77 

- 

- 

16.1 

52.0 

555 

- 

558 

15.1 

5.60 

3,126 

2.80 

- 

- 

16.0 

52.0 

548 

- 

548 

14.3 

5.75 

3,150 

2.80 

546 

112 

16.0 

49.9 

545 

15.3 

548 

15.7 

5.66 

3,100 

2.73 

535 

110 

16.0 

50.4 

542 

15.7 

548 

14.3 

5.76 

3,160 

2.76 

542 

112 

16.1 

51.0 

543 

15.2 

553 

15.0 

5.95 

3,290 

2.77 

546 

113 

16.1 

49.3 

547 

15.4 

549 

15.4 

5.91 

3,240 

2.73 

545 

114 

16.0 

44.3 

551 

15.2 

544 

14.4 

5.94 

3,230 

2.68 

536 

112 

15.8 

48.7 

539 

14.4 

521 

14.5 

5.91 

3,079 

2.74 

537 

111 

15.7 

53.0 

543 

14.3 

555 

15.5 

5.78 

3,205 

2.68 

537 

112 

- 

54.0 

546 

14.6 

536 

14.3 

5.70 

3,055 

2.63 

535 

113 

- 

55.9 

544 

14.4 

532 

14.5 

5.70 

3,035 

2.80 

529 

106 

- 

58.8 

542 

15.3 

545 

14.3 

5.42 

2,950 

3.00 

538 

103 

- 

62.0 

546 

15.4 

544 

15.0 

5.85 

3,180 

2.86 

553 

112 

- 

55.7 

540 

15.2 

532 

14.0 

5.84 

3,105 

2.83 

535 

107 

- 

57.3 

536 

14.6 

569 

15.1 

5.66 

3,146 

2.93 

545 

109 

17.2 

47.5 

534 

144 

Fitchburg. 


550 

- 

5.07 

2,788 

3.00 

530 

100 

- 

64.8 

551 

17.0 

579 

15.8 

5.00 

2,894 

3.18 

556 

104 

17.7 

63.8 

545 

- 

564 

- 

4.50 

2,537 

3.30 

569 

105 

- 

61.3 

532 

15.3 

548 

14.7 

4.55 

2,493 

3.34 

603 

115 

18.5 

64.7 

553 

16.3 

548 

14,8 

4.02 

2,203 

3.50 

569 

100 

19.1 

62.2 

545 

16.3 

42 


Fitchburg  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Cals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

545 

14.6 

4.30 

2,344 

3.25 

580 

110 

18.5 

66.0 

550 

16.5 

592 

15.5 

4.68 

2,771 

3.31 

579 

106 

20.2 

66.2 

579 

17.0 

558 

- 

5.52 

3,081 

3.05 

566 

113 

- 

62.1 

547 

- 

536 

15.2 

5.61 

3,007 

3.02 

556 

109 

17.5 

56.2 

539 

16.0 

532 

14.8 

5.71 

3,038 

2.89 

552 

111 

17.0 

52.1 

536 

15.8 

575 

15.5 

5.62 

2,232 

2.78 

551 

114 

16.6 

45.0 

532 

16.0 

560 

15.4 

5.32 

2,979 

2.64 

508 

101 

15.1 

47.8 

526 

15.3 

550 

15.0 

5.54 

3,047 

2.77 

506 

99 

15.9 

46.2 

527 

15.5 

579 

15.1 

5.60 

3,242 

2.83 

513 

99 

15.2 

55.6 

531 

15.1 

532 

14.4 

6.00 

3,192 

3.57 

581 

103 

17.7 

53.7 

542 

15.9 

542 

14.5 

5.80 

3,143 

3.60 

572 

100 

18.0 

53.4 

558 

16.1 

565 

14.6 

6.00 

3,390 

3.53 

578 

103 

17.6 

61.9 

567 

15.9 

553 

14.7 

5.50 

3,042 

3.51 

590 

107 

17.8 

49.7 

570 

16.1 

553 

14.7 

5.45 

3,013 

3.53 

585 

105 

17.5 

45.9 

564 

16.1 

570 

14.8 

5.65 

3,221 

3.53 

576 

102 

17.8 

48.9 

561 

16.2 

554 

14.7 

5.73 

3,174 

3.52 

592 

107 

17.9 

44.7 

564 

16.2 

566 

14.6 

5.67 

3,209 

3.41 

573 

104 

17.1 

51.8 

566 

15.9 

539 

14.3 

5.57 

3,202 

3.41 

581 

107 

17.7 

48.5 

557 

15.7 

544 

14.2 

5.71 

3,106 

3.35 

607 

116 

17.4 

50.5 

555 

15.7 

561 

14.6 

5.66 

3,175 

3.28 

582 

110 

17.1 

41.4 

553 

15.5 

554 

14.4 

5.50 

3,113 

3.20 

576 

110 

17.3 

41.8 

544 

15.5 

553 

14.3 

5.59 

3,091 

3.28 

560 

105 

17.3 

38.8 

549 

15.1 

553 

14.0 

5.50 

3,041 

3.20 

564 

107 

17.1 

41.9 

561 

15.3 

549 

14.2 

5.47 

3,003 

3.27 

575 

108 

17.6 

43.5 

554 

15.6 

556 

13.8 

5.91 

3,285 

3.22 

570 

108 

17.5 

40.8 

540 

15.4 

557 

14.2 

5.52 

3,074 

3.25 

542 

98 

16.6 

43.7 

540 

15.2 

549 

13.9 

5.53 

3,035 

3.15 

558 

106 

16.9 

34.5 

538 

15.0 

564 

14.5 

5.76 

3,248 

3.24 

558 

104 

17.2 

41.5 

551 

15.3 

585 

14.8 

5.66 

3,311 

3.26 

543 

99 

16.6 

39.4 

549 

15.0 

564 

14.4 

5.90 

3,327 

3.27 

536 

96 

16.6 

40.8 

538 

15.0 

542 

14.2 

6.00 

3,252 

3.23 

551 

100 

16.4 

47.2 

549 

15.1 

555 

14.6 

6.02 

3,341 

3.22 

556 

103 

17.5 

43.9 

544 

15.5 

540 

14.2 

5.89 

3,180 

3.23 

548 

100 

16.0 

48.3 

539 

14.9 

546 

13.8 

5.98 

3,265 

3.20 

577 

111 

16.4 

45.1 

543 

14.8 

562 

14.1 

5.47 

3,074 

3.03 

568 

113 

15.5 

43.6 

553 

14.9 

43 


Fitchburg  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

539 

13.6 

5.93 

3,196 

2.91 

553 

Ill 

15.3 

49.1 

542 

14.4 

551 

13.8 

5.92 

3,261 

2.92 

548 

109 

15.6 

44.4 

543 

14.4 

559 

14.6 

5.67 

3,169 

2.84 

542 

109 

15.1 

46.1 

554 

14.7 

561 

14.7 

5.55 

3,113 

2.68 

533 

111 

14.8 

48.6 

540 

14.7 

567 

14.4 

5.77 

3,271 

2.65 

534 

112 

14.0 

54.3 

538 

14.1 

529 

12.9 

5.94 

3,284 

2.61 

533 

113 

15.4 

54.0 

531 

13.1 

528 

12.5 

6.00 

3,120 

2.99 

550 

108 

16.1 

61.0 

535 

13.7 

559 

12.8 

6.00 

3,354 

3.06 

552 

106 

16.3 

59.0 

540 

14.3 

523 

12.2 

6.30 

3,295 

2.80 

541 

110 

15.4 

58.0 

529 

13.6 

549 

13.4 

6.10 

3,370 

2.96 

539 

105 

15.4 

61.0 

534 

14.7 

535 

13.7 

5.90 

3,167 

2.92 

537 

105 

15.5 

54.0 

543 

15.2 

550 

14.2 

5.84 

3,212 

2.93 

537 

105 

15.8 

53.0 

543 

15.0 

549 

12.8 

5.49 

3,014 

2.91 

520 

100 

15.7 

56.0 

545 

14.0 

552 

13.4 

5.49 

3,030 

2.78 

533 

108 

16.0 

57.0 

543 

14.8 

574 

14.6 

5.53 

3,174 

2.86 

535 

106 

15,4 

58.0 

550 

15.2 

539 

13.2 

5.59 

3,013 

2.88 

528 

103 

14.6 

68.0 

530 

13.5 

521 

13.0 

5.84 

3,022 

3.01 

545 

105 

16.2 

62.0 

538 

14.8 

526 

12.9 

5.48 

2,882 

3.22 

540 

98 

16.8 

63.0 

535 

- 

529 

13.0 

5.48 

2,898 

3.25 

555 

102 

16.6 

67.0 

543 

15.1 

521 

13.0 

5.47 

2,850 

3.89 

572 

96 

20.2 

39.0 

549 

15.1 

552 

14.1 

5.58 

3,064 

3.14 

557 

106 

16.7 

52.1 

545 

15.2 

Haverhill. 


- 

- 

- 

- 

2.90 

558 

113 

17.0 

- 

- 

- 

- 

- 

- 

- 

2.96 

558 

111 

16.5 

- 

- 

- 

- 

- 

- 

- 

2.76 

536 

109 

17.9 

- 

- 

- 

- 

- 

- 

- 

2.89 

559 

114 

- 

- 

- 

- 

- 

- 

- 

- 

2.79 

547 

113 

17.7 

- 

- 

- 

- 

- 

- 

- 

2.80 

537 

108 

16.0 

- 

, 

- 

- 

- 

-  ' 

- 

2.95 

551 

109 

16.8 

- 

- 

- 

- 

'  - 

- 

- 

2.95 

566 

113 

17.5 

- 

- 

- 

- 

- 

- 

- 

3.60 

558 

96 

16.4 

- 

- 

- 

- 

- 

- 

- 

3.09 

570 

111 

17.7 

- 

- 

- 

- 

- 

- 

- 

2.90 

559 

113 

16.8 

- 

- 

- 

44 


Haverhill  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

- 

- 

- 

- 

3.08 

566 

110 

16.7 

- 

- 

- 

- 

- 

- 

- 

3.03 

557 

109 

19.3 

- 

- 

- 

- 

- 

- 

- 

3.13 

555 

104 

18.5 

- 

- 

- 

- 

- 

- 

- 

3.06 

554 

107 

18.9 

- 

- 

- 

- 

- 

- 

- 

3.05 

553 

107 

19.1 

- 

- 

- 

- 

- 

- 

- 

3.03 

549 

106 

19.7 

- 

- 

- 

- 

- 

- 

- 

3.04 

546 

105 

16.1 

- 

- 

- 

- 

- 

- 

- 

2.96 

552 

109 

18.6 

- 

- 

- 

- 

- 

- 

- 

2.94 

555 

107 

17.6 

- 

- 

- 

- 

- 

- 

- 

2.92 

544 

108 

18.3 

- 

565 

17.3 

- 

- 

- 

- 

- 

554 

- 

17.8 

- 

561 

16.9 

- 

- 

- 

- 

3.17 

552 

101 

17.4 

- 

550 

16.1 

- 

- 

- 

- 

2.96 

546 

107 

16.6 

- 

546 

15.9 

- 

- 

- 

- 

3.15 

552 

101 

17.5 

- 

552 

16.0 

- 

- 

- 

- 

2.97 

549 

108 

17.5 

'  - 

560 

15.9 

- 

- 

- 

- 

2.94 

544 

107 

16.4 

- 

550 

15.7 

- 

- 

- 

- 

2.82 

539 

109 

15.5 

- 

551 

15.6 

- 

- 

- 

- 

2.81 

544 

110 

16.4 

- 

551 

15.6 

- 

- 

- 

- 

2.85 

542 

112 

15.2 

- 

542 

14.7 

- 

- 

- 

- 

2.88 

547 

110 

15.8 

- 

547 

15.0 

- 

- 

- 

- 

2.92 

555 

111 

16.0 

- 

- 

- 

- 

- 

- 

- 

2.81 

560 

116 

15.7 

- 

560 

15.8  ' 

- 

- 

- 

- 

2.84 

545 

110 

14.3 

- 

545 

14.9 

- 

- 

- 

- 

2.84 

553 

113 

15.0 

- 

553 

15.5 

- 

- 

- 

- 

2.73 

549 

115 

15.5 

- 

549 

15.0 

- 

- 

- 

- 

2.87 

552 

109 

15.3 

- 

552 

15.4 

- 

- 

- 

- 

2.99 

552 

108 

15.6 

- 

552 

16.1 

- 

- 

- 

2.78 

551 

114 

14.9 

- 

551 

16.1 

- 

- 

- 

- 

2.73 

556 

118 

15.2 

- 

556 

16.0 

- 

- 

- 

- 

2.82 

548 

112 

14.2 

- 

548 

15.6 

- 

- 

- 

2.86 

553 

113 

14.6 

- 

553 

16.3 

- 

- 

- 

- 

2.82 

551 

113 

14.3 

- 

551 

16.1 

- 

- 

- 

- 

2.69 

547 

116 

15.4 

- 

547 

15.3 

- 

- 

- 

- 

2.71 

554 

118 

16.7 

- 

554 

15.7 

- 

- 

- 

- 

2.64 

542 

116 

15.7 

- 

542 

15.1 

45 


Haverhill  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

- 

- 

- 

- 

2.63 

534 

113 

13.4 

- 

534 

14.6 

- 

- 

- 

- 

2.73 

543 

113 

14.7 

- 

543 

14.9 

- 

- 

- 

- 

2.47 

532 

118 

13.9 

- 

532 

14.4 

- 

- 

- 

- 

2.75 

535 

110 

14.2 

- 

535 

14.2 

- 

- 

- 

- 

2.64 

538 

114 

14.6 

- 

538 

14.5 

- 

- 

- 

- 

2.63 

522 

108 

13.3 

- 

522 

13.8 

- 

- 

- 

- 

2.72 

524 

107 

14.2 

- 

524 

14.1 

- 

- 

- 

- 

2.88 

537 

105 

15.6 

- 

537 

14.6 

- 

- 

- 

- 

2.72 

529 

108 

14.6 

529 

14.3 

- 

- 

- 

- 

2.93 

536 

104 

14.8 

- 

536 

14.6 

- 

- 

- 

- 

2.76 

- 

- 

- 

- 

- 

15.5 

- 

- 

- 

2.63 

530 

Ill 

15.7 

- 

530 

14.7 

- 

- 

- 

- 

2.56 

525 

112 

14.4 

- 

525 

14.8 

- 

- 

- 

- 

2.87 

547 

110 

16.1 

- 

545 

15.3 

Holyoke. 


592 

14.4 

5.23 

3,096 

2.84 

550 

112 

16.1 

45.0 

571 

14.8 

593 

15.7 

5.17 

3,066 

3.05 

569 

112 

14.0 

48.0 

579 

15.2 

- 

- 

- 

- 

3.82 

650 

116 

19.1 

- 

- 

- 

603 

16.3 

- 

- 

- 

574 

- 

16.0 

75.0 

581 

16.0 

590 

15.5 

- 

- 

- 

626 

- 

17.4 

75.0 

610 

16.7 

581 

15.3 

5.35 

3,108 

3.39 

568 

103 

17.1 

35.0 

573 

- 

- 

- 

5.69 

- 

3.20 

- 

- 

- 

43.0 

- 

- 

588 

14.4 

5.36 

3,152 

3.60 

592 

105 

17.1 

56.0 

581 

- 

590 

15.2 

5.42 

3,198 

3.42 

583 

107 

17.4 

30.0 

- 

- 

599 

15.0 

5.13 

3,073 

3.39 

603 

113 

16.9 

36.0 

601 

15.7 

585 

14.1 

5.46 

3,194 

3.57 

619 

114 

17.6 

39.0 

- 

- 

582 

14.7 

5.08 

2,957 

3.39 

602 

112 

16.7 

53.0 

- 

- 

570 

13.4 

5.18 

2,953 

3.24 

590 

116 

16.0 

46.0 

546 

14.3 

570 

13.0 

4.78 

2,725 

3.35 

577 

107 

16.2 

53.0 

558 

13.3 

- 

- 

4.83 

- 

3.36 

- 

- 

- 

55.0 

548 

572 

12.0 

4.25 

2,431 

3.15 

554 

105 

15.8 

63.0 

545 

- 

575 

13.0 

4.52 

2,609 

3.19 

560 

106 

15.7 

59.0 

537 

- 

573 

13.2 

4.73 

2,710 

3.10 

570 

111 

14.7 

68.0 

555 

- 

46 


Holyoke  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

575 

14.2 

4.30 

2,473 

3.06 

563 

110 

15.4 

71.0 

552 

- 

560 

13.1 

4.50 

2,520 

3.12 

582 

115 

15.8 

*  70.0 

559 

- 

570 

14.2 

4.47 

2,548 

2.76 

557 

117 

13.7 

65.0 

546 

- 

579 

14.0 

4.73 

2,739 

2.72 

571 

124 

13.3 

61.0 

557 

- 

573 

13.6 

4.74 

2,716 

2.72 

529 

108 

14.3 

67.0 

527 

- 

553 

13.1 

4.04 

2,240 

2.98 

561 

112 

15.3 

71.0 

544 

- 

587 

15.4 

4.23 

2,483 

3.02 

581 

117 

15.5 

80.0 

469 

- 

555 

14.2 

5.55 

3,080 

2.93 

563 

116 

15.0 

66.0 

546 

- 

581 

14.7 

5.20 

3,021 

3.62 

600 

107 

18.6 

63.0 

577 

- 

- 

- 

5.30 

- 

3.51 

- 

- 

- 

65.0 

562 

- 

575 

14.2 

5.62 

3,232 

3.28 

587 

112 

15.9 

75.0 

660 

- 

563 

13.3 

5.44 

3,062 

3.14 

583 

114 

15.6 

73.0 

569 

- 

562 

12.3 

5.30 

2,979 

2.95 

534 

103 

15.1 

66.0 

541 

- 

583 

13.0 

5.39 

3,142 

2.90 

540 

107 

14.3 

75.0 

555 

- 

563 

13.6 

4.67 

2,629 

2.86 

544 

109 

15.2 

80.0 

541 

- 

576 

14.1 

4.80 

2,765 

2.97 

551 

109 

15.1 

80.0 

562 

- 

572 

14.7 

4.77 

2,728 

2.90 

557 

113 

15.2 

72.0 

547 

- 

569 

14.3 

5.22 

2,970 

2.97 

564 

113 

14.6 

80.0 

548 

- 

571 

10.3 

5.33 

3,043 

3.05 

580 

115 

15.0 

76.0 

554 

- 

585 

12.2 

4.77 

2,790 

3.09 

586 

116 

15.4 

79.0 

571 

- 

573 

11.2 

5.18 

2,968 

2.93 

597 

126 

15.1 

79.0 

577 

15.9 

575 

7.7 

3.50 

2,012 

3.13 

575 

111 

14.2 

86.0 

553 

- 

565 

8.7 

4.31 

2,435 

2.92 

590 

123 

14.7 

80.0 

581 

- 

581 

9.2 

4.35 

2,527 

3.00 

580 

117 

15.0 

91.0 

- 

- 

577 

13.4 

4.92 

2,826 

3.16 

576 

111 

15.8 

64.6 

561 

15.2 

Lowell. 


593 

14.8 

5.30 

3,143 

3.78 

578 

98 

18.0 

45.0 

590 

16.6 

584 

16.1 

5.30 

3,095 

3.94 

573 

93 

17.8 

17.5 

584 

16.6 

596 

14.3 

5.38 

3,205 

3.45 

570 

103 

16.7 

22.9 

591 

15.0 

595 

15.4 

5.37 

3,195 

3.52 

569 

100 

17.2 

21.4 

583 

15.7 

594 

14.2 

5.40 

3,207 

3.50 

567 

100 

16.7 

25.9 

575 

15.5 

581 

13.8 

5.42 

3,150 

3.76 

592 

102 

18.1 

30.4 

584 

14.8 

598 

14.6 

5.38 

3,216 

3.41 

569 

103 

17.6 

33.0 

588 

14.9 

- 1 

47 


Lowell  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

591 

14.7 

5.40 

3,192 

3.33 

559 

100 

16.6 

33.5 

583 

14.8 

591 

15.1 

5.38 

*  3,180 

3.45 

572 

103 

17.2 

32.0 

592 

15.5 

600 

15.8 

5.39 

3,232 

3.79 

604 

104 

19.3 

28.3 

597 

15.4 

599 

15.3 

5.38 

3,229 

4.03 

620 

103 

19.0 

29.3 

604 

16.7 

599 

15.2 

5.36 

3,213 

3.78 

601 

104 

18.9 

31.2 

599 

15.9 

593 

15.0 

5.41 

3,207 

3.66 

601 

106 

19.3 

31.8 

595 

16.1 

594 

15.0 

5.40 

3,209 

3.73 

600 

104 

18.8 

31.2 

596 

16.1 

596 

14.9 

5.39 

3,215 

3.80 

601 

103 

18.8 

27.8 

600 

15.5 

595 

14.5 

5.37 

3,194 

3.85 

591 

100 

18.2 

34.2 

601 

15.6 

608 

15.2 

5.3Q 

3,183 

3.79 

600 

103 

18.9 

33.6 

604 

15.7 

591 

15.4 

5.43 

3,206 

3.58 

596 

107 

18.8 

31.6 

592 

15.2 

584 

14.7 

5.45 

3,180 

3.55 

579 

103 

18.2 

31.5 

584 

15.3 

582 

13.3 

5.39 

3,139 

3.33 

558 

97 

16.3 

35.2 

583 

14.7 

586 

13.9 

5.44 

3,185 

3.24 

551 

101 

15.4 

34.7 

572 

14.8 

586 

14.1 

5.42 

3,177 

3.33 

550 

99 

15.6 

33.4 

579 

13.9 

612 

16.0 

5.39 

3,299 

3.20 

559 

105 

16.6 

35.8 

585 

14.3 

602 

15.0 

5.38 

3,242 

3.10 

551 

105 

15.5 

35.3 

589 

14.5 

597 

13.2 

5.37 

3,206 

3.24 

542 

99 

14.1 

34.7 

588 

14.0 

604 

15.1 

5.36 

3,238 

3.22 

564 

106 

15.2 

34.6 

590 

14.4 

606 

14.8 

5.34 

3,238 

2.90 

541 

107 

14.5 

36.2 

577 

14.3 

611 

14.9 

5.36 

3,275 

2.89 

534 

105 

14.1 

34.0 

577 

13.8 

600 

13.4 

5.43 

3,258 

3.01 

524 

98 

12.5 

32.1 

572 

13.3 

590 

14.9 

5.37 

3,171 

2.55 

507 

107 

12.7 

29.0 

577 

13.3 

603 

14.8 

5.33 

3,215 

2.40 

497 

106 

12.5 

31.9 

573 

13.5 

591 

14.7 

5.32 

3,142 

2.36 

481 

101 

10.9 

28.1 

567 

13.9 

599 

15.1 

5.27 

3,154 

2.44 

484 

98 

10.4 

28.6 

568 

14.3 

593 

15.3 

5.32 

3,153 

2.26 

479 

103 

9.8 

27.5 

568 

13.5 

591 

14.9 

5.37 

3,174 

2.17 

451 

94 

10.1 

26.7 

562 

13.7 

600 

15.6 

5.42 

3,252 

2.26 

465 

97 

10.0 

24.2 

569 

13.0 

594 

15.0 

5.42 

3,219 

2.22 

470 

100 

9.1 

25.4 

568 

12.5 

607 

15.4 

5.38 

3,266 

2.27 

479 

103 

9.5 

23.3 

586 

13.2 

600 

15.1 

5.39 

3,234 

2.12 

466 

103 

9.3 

25.3 

585 

13.3 

598 

15.6 

5.37 

3,119 

2.22 

463 

97 

9.1 

24.7 

587 

12.9 

607 

15.5 

5.30 

3,417 

2.16 

460 

98 

8.9 

27.7 

579 

12.5 

607 

15.0 

5.32 

3,213 

2.17 

462 

99 

8.6 

25.3 

580 

12.3 

48 


Lowell  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

603 

14.7 

5.35 

3,126 

2.21 

465 

94 

9.1 

27.2 

574 

12.5 

584 

14.2 

5.40 

3,154 

2.61 

475 

91 

10.1 

36.6 

577 

11.2 

598 

15.5 

5.36 

3,205 

2.48 

490 

100 

11.1 

27.5 

586 

12.5 

594 

15.3 

5.28 

3,136 

2.57 

482 

95 

10.8 

28.5 

586 

13.1 

605 

15.7 

5.21 

3,152 

3.38 

506 

114 

12.6 

27.6 

588 

13.1 

604 

15.8 

5.31 

3,207 

3.39 

531 

92 

14.0 

28.6 

584 

14.3 

608 

15.5 

5.37 

3,265 

3.01 

544 

105 

14.5 

26.9 

587 

14.7 

596 

14.9 

5.41 

3,224 

2.97 

513 

96 

13.0 

27.3 

584 

14.2 

599 

16.1 

5.38 

3,222 

3.01 

533 

101 

13.5 

26.9 

587 

15.1 

591 

15.7 

5.41 

3,215 

3.13 

533 

98 

14.6 

24.2 

586 

15.6 

607 

16.5 

5.65 

3,430 

3.22 

545 

100 

15.8 

29.9 

590 

15.7 

597 

15.1 

5.39 

3,218 

3.03 

540 

103 

14.0 

29.5 

589 

14.6 

573 

14.9 

5.38 

3,083 

3.10 

509 

91 

13.1 

26.5 

562 

14.2 

- 

15.5 

5.37 

- 

3.19 

- 

- 

13.7 

31.3 

- 

14.2 

- 

15.5 

5.35 

- 

3.07 

— 

13.3 

27.8 

- 

14.1 

- 

15.0 

5.46 

- 

3.12 

- 

- 

13.4 

30.3 

- 

13.3 

582 

15.3 

5.42 

3,154 

3.37 

526 

92 

12.7 

28.3 

573 

14.8 

591 

16.3 

5.32 

3,150 

3.63 

557 

95 

17.0 

28.1 

591 

15.6 

572 

14.9 

5.42 

3,100 

3.94 

561 

90 

15.3 

31.2 

576 

14.4 

594 

15.0 

5.43 

3,201 

3.08 

536 

100 

14.3 

29.6 

584 

14.3 

Lynn . 


577 

14.7 

5.33 

3,075 

2.99 

567 

113 

19.0 

50.0 

574 

16.5 

568 

13.3 

5.37 

3,050 

3.03 

579 

116 

19.5 

- 

580 

16.8 

564 

15.3 

5.25 

2,961 

2.97 

575 

117 

18.7 

- 

581 

17.8 

617 

14.7 

5.20 

3,208 

3.06 

573 

113 

17.8 

- 

- 

- 

578 

13.8 

5.25 

3,034 

- 

- 

- 

- 

- 

578 

15.8 

574 

16.2 

5.18 

2,973 

2.88 

548 

110 

17.1 

- 

579 

16.7 

541 

15.1 

5.08 

2,748 

2.84 

543 

109 

16.9 

- 

565 

16.1 

596 

15.5 

5.13 

3,057 

2.94 

544 

105 

16.8 

- 

566 

16.3 

552 

15.2 

5.47 

- 

2.87 

517 

103 

- 

50.0 

560 

16.5 

567 

- 

5.37 

3,044 

2.74 

509 

104 

- 

38.0 

547 

- 

571 

- 

5.24 

2,992 

2.68 

518 

110 

- 

41.0 

549 

16.9 

562 

- 

5.28 

2,970 

2.66 

519 

111 

- 

38.0 

556 

- 

49 


Lynn  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

577 

- 

5.15 

2,961 

2.73 

518 

107 

- 

- 

549 

14.1 

587 

15.3 

5.15 

3,023 

2.95 

548 

108 

17.4 

45.0 

566 

15.5 

581 

15.9 

5.15 

2,992 

3.06 

571 

113 

17.0 

50.0 

562 

- 

590 

14.7 

5.08 

2,997 

3.15 

565 

108 

16.9 

49.0 

570 

15.1 

595 

14.8 

5.35 

3,183 

2.96 

547 

107 

17.6 

48.0 

564 

- 

569 

- 

5.35 

3,044 

2.96 

555 

110 

- 

48.0 

562 

- 

565 

- 

5.43 

3,068 

3.01 

565 

112 

- 

58.7 

555 

- 

549 

- 

5.32 

2,920 

2.95 

573 

116 

- 

62.8 

557 

- 

559 

- 

5.29 

2,957 

2.79 

558 

117 

- 

58.0 

560 

- 

590 

- 

5.26 

3,103 

2.85 

554 

113 

- 

59.0 

555 

- 

577 

- 

5.09 

2,937 

3.07 

550 

106 

- 

64.0 

553 

- 

576 

- 

5.52 

3,179 

3.04 

545 

105 

- 

59.0 

550 

- 

571 

5.50 

3,140 

3.14 

551 

104 

- 

55.0 

552 

- 

565 

- 

5.51 

3,113 

3.41 

558 

100 

- 

56.3 

560 

- 

570 

- 

5.46 

3,112 

3.21 

570 

108 

- 

57.0 

556 

- 

567 

- 

5.58 

3,163 

3.07 

561 

109 

- 

51.2 

550 

.  - 

565 

- 

5.45 

3,079 

3.16 

567 

109 

- 

46.8 

549 

- 

550 

14.0 

5.43 

2,987 

3.11 

551 

105 

- 

45.0 

550 

13.8 

551 

11.8 

5.24 

2,887 

3.28 

563 

104 

- 

43.7 

562 

14.6 

571 

12.6 

5.16 

2,946 

3.49 

570 

101 

- 

38.8 

568 

14.0 

570 

11.3 

5.19 

2,958 

3.25 

558 

103 

17.7 

39.0 

573 

14.4 

580 

12.9 

5.35 

3,103 

2.84 

530 

105 

17.7 

33.0 

562 

14.4 

- 

- 

5.31 

- 

2.81 

534 

106 

- 

34.3 

554 

13.5 

561 

12.1 

5.19 

2,911 

2.84 

526 

104 

12.9 

34.5 

557 

13.5 

554 

10.7 

5.29 

2,930 

2.73 

521 

105 

14.0 

33.2 

555 

13.6 

- 

- 

5.23 

- 

2.74 

530 

108 

- 

35.9 

556 

13.6 

- 

- 

5.21 

- 

2.66 

529 

110 

- 

39.3 

552 

13.6 

583 

13.1 

5.23 

3,049 

2.51 

509 

107 

14.3 

37.3 

555 

13.9 

588 

11.1 

5.12 

3,010 

2.50 

500 

104 

11.5 

35.5 

563 

13.6 

- 

- 

5.34 

- 

2.51 

509 

107 

- 

42.7 

551 

12.8 

564 

- 

5.26 

2,966 

2.47 

- 

- 

- 

43.0 

537 

13.3 

553 

- 

5.35 

2,958 

2.52 

503 

105 

- 

43.6 

537 

12.4 

561 

- 

5.30 

2,973 

2.48 

495 

103 

- 

43.0 

536 

12.2 

550 

- 

5.05 

2,770 

2.54 

495 

100 

- 

46.0 

540 

12.6 

565 

- 

4.94 

2,791 

2.57 

502 

103 

- 

51.0 

542 

12.4 

50 


Lynn  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

567 

- 

5.12 

2,903 

2.56 

495 

100 

- 

47.9 

535 

- 

574 

- 

5.02 

2,881 

2.47 

485 

99 

- 

49.6 

529 

12.7 

571 

- 

5.02 

2,866 

2.51 

494 

101 

- 

45.5 

531 

12.8 

510 

- 

5.06 

2,580 

2.47 

515 

111 

- 

45.4 

535 

13.0 

526 

- 

4.95 

2,603 

2.48 

488 

100 

- 

49.4 

530 

12.6 

547 

- 

4.80 

2,625 

2.48 

492 

105 

- 

53.6 

528 

12.7 

548 

- 

4.92 

2,697 

2.47 

508 

109 

- 

51.2 

526 

12.5 

569 

- 

4.97 

2,817 

2.74 

508 

100 

- 

51.4 

539 

- 

590 

- 

5.14 

3,032 

2.99 

550 

108 

- 

51.4 

544 

- 

573 

- 

5.23 

2;996 

3.02 

549 

107 

- 

49.0 

546 

13.1 

560 

- 

5.12 

2,867 

2.91 

531 

100 

- 

46.8 

546 

13.1 

553 

- 

5.08 

2,809 

2.94 

540 

105 

- 

48.1 

546 

13.1 

562 

- 

4.98 

2,798 

2.96 

530 

110 

- 

46.3 

546 

13.4 

567 

13.8 

5.22 

2,962 

2.85 

535 

107 

16.2 

46.9 

553 

14.1 

Malden. 


575 

14.9 

4.58 

2,633 

3.14 

575 

111 

17.2 

70.5 

566 

15.8 

585 

14.9 

4.83 

2,835 

3.28 

522 

92 

16.3 

67.0 

557 

15.6 

575 

14.9 

4.87 

2,790 

3.07 

548 

105 

16.2 

68.6 

560 

15.7 

578 

14.9  ' 

4.83 

2,792 

3.02 

561 

111 

16.2 

70.9 

564 

15.7 

585 

15.1 

4.88 

2,854 

3.10 

561 

108 

16.2 

71.2 

559 

15.1 

563 

14.6 

4.90 

2,759 

2.88 

546 

109 

15.9 

69.8 

544 

14.9 

574 

14.6 

4.85 

2,784 

2.55 

520 

114 

14.9 

70.7 

533 

14.5 

562 

14.4 

4.88 

2,743 

2.78 

517 

102 

14.7 

70.1 

522 

13.6 

549 

13.9 

4.88 

2,677 

3.02 

533 

101 

16.0 

69.0 

545 

14.1 

557 

14.1 

4.85 

2,701 

2.76 

536 

108 

15.7 

70.2 

533 

14.0 

567 

13.9 

4.90 

2,778 

3.08 

546 

104 

15.7 

66.0 

551 

14.3 

570 

14.3 

4.90 

2,793 

3.05 

548 

105 

15.3 

66.0 

546 

14.0 

573 

14.1 

4.81 

2,756 

3.00 

543 

105 

15.9 

67.0 

558 

14.1 

565 

14.2 

4.62 

2,610 

2.97 

551 

108 

16.2 

69.9 

547 

14.7 

550 

14.1 

4.70 

2,585 

3.01 

556 

109 

15.7 

68.0 

538 

14.1 

566 

14.2 

4.69 

2,655 

2.95 

541 

106 

15.7 

70.0 

541 

14.0 

570 

14.3 

4.75 

2,708 

3.03 

529 

100 

15.5 

68.0 

539 

13.9 

558 

13.9 

4.70 

2,623 

3.08 

543 

103 

15.8 

70.0 

542 

13.9 

51 


Malden  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

561 

13.9 

4.59 

2,575 

3.01 

547 

106 

15.8 

71.7 

542 

14.0 

560 

13.7 

4.73 

2,648 

3.15 

538 

100 

15.7 

70.0 

543 

13.8 

558 

13.9 

4.81 

2,684 

3.26 

543 

99 

15.9 

69.0 

543 

14.1 

556 

13.7 

4.90 

2,729 

3.13 

556 

106 

16.8 

71.0 

548 

14.3 

559 

13.5 

4.76 

2,661 

2.78 

557 

117 

16.8 

74.0 

548 

14.2 

556 

12.9 

4.70 

2,613 

3.19 

564 

107 

17.1 

75.8 

551 

14.4 

548 

12.1 

4.85 

2,658 

3.15 

546 

102 

16.2 

74.9 

526 

13.2 

540 

11.5 

4.84 

2,614 

3.12 

558 

107 

16.7 

75.0 

534 

13.4 

555 

12.1 

4.74 

2,631 

3.10 

560 

108 

17.3 

75.0 

550 

14.4 

567 

13.2 

4.66 

2,642 

3.18 

565 

109 

17.3 

73.8 

554 

15.1 

548 

11.9 

4.74 

2,598 

2.97 

545 

106 

16.6 

72.6 

531 

13.8 

554 

12.6 

4.79 

2,654 

3.01 

547 

106 

16.9 

72.9 

535 

13.4 

567 

12.8 

4.84 

2,744 

2.98 

545 

106 

16.7 

72.5 

536 

13.4 

573 

13.1 

4.81 

2,756 

2.93 

542 

103 

16.2 

67.3 

543 

13.7 

566 

12.6 

4.90 

2,773 

2.86 

534 

106 

15.8 

63.0 

535 

13.5 

567 

12.2 

4.90 

2,778 

2.92 

529 

103 

16.3 

63.0 

531 

13.1 

560 

12.2 

4.90 

2,744 

2.92 

513 

97 

15.7 

62.0 

523 

12.3 

567 

12.8 

4.90 

2,778 

2.82 

511 

95 

15.9 

58.9 

531 

12.9 

586 

12.9 

4.69 

2,748 

2.86 

524 

103 

16.3 

67.0 

542 

13.3 

585 

13.5 

4.76 

2,785 

2.94 

521 

99 

15.8 

66.8 

65.8 

544 

13.7 

548 

11.2 

4.89 

2,680 

2.93 

505 

94 

15.8 

520 

12.4 

568 

12.1 

4.84 

2,749 

2.85 

528 

104 

16.6 

67.1 

543 

13.5 

565 

12.1 

4.56 

2,576 

2.97 

552 

106 

16.5 

70.1 

549 

14.6 

558 

12.0  # 

4.65 

2,595 

3.01 

544 

105 

16.9 

70.3 

541 

13.9 

563 

11.7 

4.83 

2,719 

3.10 

550 

105 

17.1 

70.3 

544 

14.1 

565 

11.5 

4.77 

2,735 

3.04 

534 

101 

16.2 

70.7 

542 

14.0 

564 

11.6 

4.63 

2,611 

2.95 

540 

105 

16.5 

73.0 

545 

14.2 

556 

11.1 

4.58 

2,537 

2.94 

551 

110 

16.9 

75.0 

542 

14.0 

534 

9.9 

4.66 

2,488 

2.98 

542 

105 

16.5 

75.0 

530 

12.7 

533 

10.0 

4.68 

2,494 

2.89 

539 

107 

16.7 

75.0 

533 

13.9 

528 

10.0 

4.53 

2,392 

2.86 

543 

109 

17.4 

75.9 

534 

13.6 

528 

10.1 

4.89 

2,582 

2.86 

541 

108 

17.1 

73.8 

535 

13.8 

535 

9.9 

4.90 

2,622 

2.99 

539 

104 

17.1 

74.4 

534 

14.4 

539 

11.5 

4.90 

2,641 

2.88 

536 

106 

16.9 

75.8 

535 

13.9 

547 

10.0 

4.90 

2,680 

2.87 

548 

111 

18.2 

75.0 

539 

14.3 

52 


Malden  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

550 

10.3 

4.90 

2,695 

2.93 

544 

107 

17.2 

76.9 

538 

14.5 

538 

9.8 

4.90 

2,636 

2.95 

537 

108 

16.6 

81.4 

531 

14.0 

519 

9.1 

4.90 

2,543 

2.92 

546 

108 

17.2 

81.6 

530 

14.1 

521 

8.7 

4.90 

2,553 

2.93 

547 

108 

17.0 

84.4 

535 

- 

505 

9.2 

4.90 

2,475 

2.90 

547 

110 

17.2 

81.5 

535 

14.3 

510 

8.7 

4.90 

2,499 

2.89 

546 

109 

17.0 

79.3 

528 

13.9 

557 

12.4 

4.79 

2,666 

2.97 

542 

106 

16.4 

71.3 

541 

14.0 

New  Bedford. 


623 

15.3 

5.07 

3,159 

3.48 

562 

99 

15.1 

70.0 

560 

15.2 

627 

15.3 

5.17 

3,242 

3.38 

609 

115 

15.1 

70.0 

550 

15.3 

627 

15.3 

5.15 

3,229 

3.59 

582 

103 

17.0 

66.0 

578 

16.8 

626 

15.4 

5.12 

3,205 

2.64 

531 

111 

14.0 

70.0 

516 

14.8 

623 

15.1 

5.12 

3,190 

3.79 

595 

100 

17.6 

72.0 

577 

16.9 

627 

14.9 

4.97 

3,116 

3.44 

592 

109 

17.6 

69.0 

591 

16.8 

619 

14.8 

5.16 

3,194 

3.35 

579 

107 

17.3 

75.0 

570 

16.6 

598 

14.5 

4.98 

2,969 

3.36 

554 

100 

17.1 

78.0 

559 

16.7 

631 

14.7 

5.16 

3,256 

3.24 

565 

106 

17.4 

76.0 

567 

16.7 

623 

14.4 

5.24 

3,265 

3.13 

561 

107 

17.3 

78.0 

572 

16.6 

617 

14.7 

5.05 

3,116 

3.20 

560 

105 

17.5 

78.0 

573 

16.5 

622 

14.7 

5.02 

3,122 

3.20 

572 

109 

17.3 

76.0 

575 

16.4 

- 

14.2 

5.11 

- 

3.27 

- 

- 

17.6 

74.0 

569 

16.3 

- 

12.3 

5.23 

- 

3.38 

- 

- 

16.9 

73.0 

>  554 

16.0 

- 

12.6 

5.10 

- 

2.90 

- 

- 

16.3 

75.0 

547 

15.5 

- 

12.6 

5.21 

- 

3.11 

- 

- 

16.7 

73.0 

556 

15.5 

604 

14.0 

5.14 

3,105 

3.16 

547 

96 

17.1 

72.0 

570 

16.1 

608 

14.5 

5.25 

3,192 

3.10 

557 

107 

18.2 

73.0 

570 

17.1 

619 

14.7 

5.20 

3,219 

3.63 

583 

102 

19.6 

72.0 

590 

18.1 

613 

13.5 

5.10 

3,126 

3.41 

575 

105 

17.7 

74.0 

582 

17.0 

622 

13.9 

5.05 

3,141 

3.26 

570 

107 

18.4 

74.0 

576 

16.9 

613 

14.1 

5.20 

3,188 

3.42 

573 

103 

18.4 

72.0 

578 

17.1 

614 

14.2 

5.05 

3,101 

3.11 

575 

112 

18.0 

73.0 

574 

16.7 

611 

14.0 

5.11 

3,122 

2.93 

544 

108 

17.1 

75.0 

552 

16.2 

609 

14.0 

5.21 

3,173 

2.92 

573 

118 

16.9 

74.0 

558 

16.2 

53 


New  Bedford  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

613 

16.3 

5.20 

3,188 

3.00 

558 

110 

17.2 

73.0 

560 

16.2 

611 

14.1 

5.30 

3,238 

3.04 

552 

107 

17.6 

72.0 

564 

16.3 

612 

14.0 

5.23 

3,201 

3.30 

560 

103 

17.1 

72.0 

554 

16.2 

608 

13.5 

5.24 

3,186 

3.22 

551 

102 

16.5 

72.0 

563 

15.6 

612 

13.6 

5.05 

3,091 

3.22 

560 

105 

17.0 

71.0 

573 

15.8 

604 

14.2 

4.81 

2,905 

3.04 

557 

109 

16.7 

73.0 

578 

16.0 

610 

13.8 

4.97 

3,032 

2.95 

557 

111 

16.7 

77.0 

568 

16.1 

608 

14.1 

4.97 

3,022 

2.93 

559 

112 

17.1 

76.0 

565 

16.0 

616 

14.7 

4.80 

2,956 

2.94 

561 

113 

17.2 

75.0 

567 

16.2 

615 

14.8 

4.98 

3,063 

2.70 

543 

114 

17.0 

74.0 

553 

15.9 

611 

14.4 

5.03 

3,073 

2.98 

544 

106 

16.9 

74.0 

552 

16.0 

606 

14.7 

4.86 

2,945 

2.84 

544 

110 

16.9 

77.0 

544 

15.8 

590 

14.0 

5.14 

3,032 

3.14 

536 

99 

17.4 

75.0 

538 

15.9 

587 

14.7 

4.98 

2,923 

2.90 

538 

106 

16.8 

75.0 

533 

15,8 

590 

14.6 

4.92 

2,903 

2.90 

535 

105 

16.5 

79.0 

535 

15.6 

601 

14.5 

5.01 

3,011 

3.00 

545 

106 

16.8 

76.0 

543 

15.8 

598 

14.8 

4.84 

2,894 

2.92 

534 

104 

16.7 

77.0 

540 

15.9 

596 

14.1 

4.94 

2,944 

2.86 

530 

105 

16.7 

77.0 

535 

15.6 

613 

15.1 

4.80 

2,942 

3.00 

520 

97 

16.4 

73.0 

535 

15.6 

604 

14.6 

4.99 

3,014 

3.10 

544 

103 

17.3 

75.0 

544 

15.9 

611 

14.2 

4.94 

3,018 

2.97 

548 

108 

17.0 

74.0 

552 

15.9 

610 

15.0 

4.65 

2,836 

2.84 

523 

102 

16.7 

78.0 

537 

15.6 

615 

14.1 

4.62 

2,841 

2.97 

527 

100 

17.5 

78.0 

554 

16.4 

614 

14.1 

4.63 

2,843 

2.97 

536 

104 

17.0 

76.0 

570 

16.8 

596 

14.2 

4.65 

2,861 

2.85 

550 

112 

- 

76.0 

575 

17.7 

582 

13.6 

4.76 

2,770 

2.97 

521 

98 

- 

76.5 

557 

16.8 

599 

15.3 

4.43 

2,654 

2.92 

547 

109 

18.7 

80.0 

568 

17.6 

586 

13.2 

4.02 

2,356 

2.77 

552 

115 

16.6 

86.0 

553 

15.5 

585 

12.9 

4.63 

2,709 

3.05 

552 

107 

17.4 

83.0 

582 

17.1 

568 

11.4 

4.73 

2,687 

3.12 

512 

92 

12.8 

78.7 

571 

16.0 

585 

12.2 

4.57 

2,673 

3.19 

578 

111 

17.3 

81.0 

550 

14.4 

576 

12.4 

4.66 

2,684 

3.04 

511 

93 

14.2 

81.6 

568 

14.5 

598 

13.9 

4.32 

2,583 

3.10 

524 

91 

15.7 

83.3 

532 

13.0 

600 

14.4 

4.69 

2,760 

3.18 

517 

92 

11.1 

81.0 

522 

12.0 

597 

14.0 

4.81 

2,872 

3.22 

547 

101 

13.9 

82.1 

551 

13.7 

607 

14.1 

4.96 

3,002 

3.12 

552 

105 

16.8 

74.1 

559 

16.3 

54 


Old  Colony. 


Water. 

Water. 

Water. 

Gallons. 

B.  T.  U. 

Factor. 

Gallons. 

B.  T.  U. 

Factor. 

Gallons. 

B.  T.  U. 

Factor. 

2.82 

557 

115 

2.80 

528 

105 

2.50 

514 

110 

2.90 

544 

108 

2.80 

524  • 

104 

2.70 

526 

108 

2.70 

528 

110 

2.90 

528 

104 

2.40 

519 

116 

2.60 

532 

113 

2.50 

524 

114 

2.40 

522 

117 

2.66 

530 

110 

2.40 

527 

117 

2.40 

510 

111 

2.80 

528 

105 

2.80 

528 

106 

2.50 

516 

110 

2.70 

530 

113 

2.90 

533 

105 

2.50 

513 

109 

2.60 

523 

109 

2.80 

534 

108 

2.50 

514 

110 

2.70 

523 

110 

2.80 

528 

104 

2.30 

514 

117 

2.60 

522 

109 

2.80 

527 

105 

2.40 

520 

116 

2.30 

509 

115 

2.90 

526 

100 

2.50 

515 

110 

2.70 

510 

102 

2.80 

528 

105 

3.00 

500 

91 

2.90 

517 

99 

2.60 

533 

102 

2.50 

512 

109 

2.90 

544* 

108 

2.70 

532 

110 

2.50 

510 

108 

2.80 

536 

108 

2.60 

530 

112 

2.60 

514 

107 

2.30 

524 

121 

2.70 

532 

110 

2.50 

507 

107 

2.80 

530 

106 

2.50 

531 

115 

2.60 

513 

106 

2.90 

530 

103 

2.50 

530 

116 

2.60 

513 

106 

2.70 

528 

109 

2.60 

534 

114 

2.63 

524 

109 

2.50 

- 

- 

2.50 

530 

116 

2.80 

522 

103 

2.50 

523 

113 

Springfield. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

539 

13.3 

5.50 

2,908 

3.28 

576 

109 

18.7 

- 

566 

16.5 

538 

14.9 

5.86 

- 

3.45 

563 

100 

18.8 

- 

- 

- 

548 

14.2 

5.68 

- 

3.11 

548 

104 

19.1 

- 

550 

16.9 

554 

14.0 

5.55 

- 

2.50 

553 

125 

18.7 

- 

530 

16.0 

556 

13.6 

5.47 

- 

2.69 

523 

107 

18.3 

- 

532 

16.1 

579 

15.1 

5.65 

3,200 

2.89 

537 

106 

18.1 

51.0 

- 

16.2 

559 

15.1 

5.55 

3,102 

2.80 

509 

99 

18.6 

56.0 

522 

16.7 

55 


Springfield  —  Continued. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

547 

14.5 

5.51 

3,013 

2.85 

505 

96 

17.6 

55.0 

520 

14.8 

565 

14.3 

5.39 

3,045 

3.24 

545 

100 

18.5 

53.0 

513 

15.6 

538 

13.9 

5.64 

3,034 

2.76 

505 

98 

18.2 

52.9 

518 

15.5 

549 

14.1 

5.47 

3,003 

3.09 

507 

88 

17.9 

53.1 

513 

15.4 

533 

14.2 

5.46 

2,910 

3.53 

533 

90 

19.0 

53.0 

519 

15.3 

542 

14.7 

5.33 

2,887 

3.23 

523 

93 

19.0 

53.5 

524 

15.6 

545 

14.9 

5.32 

2,897 

3.08 

536 

101 

19.2 

51.0 

519 

14.9 

555 

15.1 

5.24 

2,908 

2.95 

542 

106 

18.9 

52.0 

519 

15.5 

550 

14.8 

5.40 

2,969 

3.20 

542 

100 

18.8 

52.8 

515 

15.2 

549 

13.5 

5.47 

3,002 

3.22 

593 

115 

17.8 

50.8 

517 

13.8 

535 

13.0 

5.26 

2,814 

3.19 

536 

98 

18.1 

57.7 

520 

14.2 

544 

14.3 

5.49 

2,983 

3.01 

531 

101 

18.3 

56.5 

522 

15.3 

553 

14.8 

5.52 

3,050 

3.16 

541 

100 

18.3 

60.8 

533 

15.9 

554 

14.6 

5.10 

2,825 

3.32 

548 

99 

18.6 

64.1 

560 

14.7 

557 

13.8 

5.03 

2,801 

3.05 

577 

111 

19.2 

61.8 

521 

14.6 

535 

13.4 

5.16 

2,761 

3.09 

527 

97 

18.8 

63.2 

518 

14.5 

520 

12.9 

5.11 

2,654 

3.12 

553 

105 

19.0 

61.6 

515 

14.4 

537 

14.0 

5.03 

2,702 

3.32 

548 

91 

18.9 

57.5 

526 

15.0 

512 

11.9 

5.19 

2,657 

3.40 

547 

97 

18.8 

43.1 

521 

14.6 

563 

14.3 

5.09 

2,865 

3.12 

575 

112 

19.1 

51.4 

531 

15.0 

560 

14.2 

5.22 

2,923 

3.27 

567 

106 

18.5 

52.7 

527 

15.5 

532 

13.9 

4.97 

2,644 

2.89 

543 

108 

18.8 

53.5 

528 

15.7 

549 

13.9 

5.07 

2,782 

3.12 

540 

101 

18.7 

52.4 

550 

15.3 

541 

13.2 

5.12 

2,769 

3.00 

550 

107 

18.8 

62.3 

524 

14.3 

541 

13.2 

4.86 

2,629 

3.15 

540 

100 

18.1 

60.4 

521 

14.6 

525 

8.4 

5.63 

2,955 

3.29 

535 

100 

18.2 

56.9 

518 

13.9 

519 

7.0 

5.58 

2,896 

2.95 

533 

103 

18.2 

55.7 

520 

14.0 

505 

7.5 

5.81 

2,934 

3.04 

524 

98 

17.8 

54.7 

519 

13.8 

508 

7.0 

5.75 

2,911 

3.14 

533 

98 

18.5 

55.8 

520 

14.2 

505 

7.1 

5.68 

2,868 

3.18 

539 

99 

19.3 

57.9 

520 

14.5 

- 

- 

5.75 

- 

3.15 

- 

- 

- 

57.3 

- 

- 

497 

6.9 

6.17 

3,056 

3.06 

538 

98 

18.7 

60.0 

529 

14.9 

505 

7.4 

5.72 

2,888 

3.02 

521 

97 

18.1 

56.1 

532 

14.2 

530 

8.3 

5.73 

3,036 

3.12 

534 

99 

18.4 

61.2 

531 

14.4 

501 

7.0 

5.93 

3,024 

3.31 

529 

93 

18.4 

59.0 

528 

14.7 

518 

8.9 

5.85 

3,030 

3.19 

533 

97 

18.9 

62.0 

529 

15.2 

56 


Springfield  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

h2o. 

B.T.U. 

Candle 

Power. 

518 

7.4 

5.55 

2,874 

3.10 

541 

102 

19.5 

68.0 

528 

15.5 

517 

7.6 

5.13 

2,652 

3.14 

534 

98 

19.4 

69.0 

525 

16.2 

- 

7.0 

5.21 

- 

3.20 

- 

- 

19.0 

62.0 

527 

15.9 

505 

6.7 

5.24 

2,646 

3.18 

537 

98 

19.3 

59.0 

524 

15.3 

507 

7.4 

4.12 

2,088 

3.21 

554 

103 

19.7 

62.0 

526 

15.4 

538 

13.3 

4.79 

2,577 

3.22 

545 

100 

19.9 

51.6 

535 

16.1 

529 

7.4 

5.22 

2,861 

3.22 

547 

101 

19.3 

48.5 

535 

15.9 

532 

12.9 

5.11 

2,718 

3.18 

547 

102 

- 

44.0 

549 

16.1 

540 

10.9 

5.13 

2,770 

3.34 

552 

99 

19.3 

46.0 

545 

- 

- 

14.8 

4.83 

- 

3.16 

- 

- 

18.4 

51.0 

- 

16.7 

527 

14.7 

4.93 

2,598 

3.07 

534 

100 

19.3 

54.4 

526 

15.4 

523 

14.0 

4.88 

2.552 

3.02 

515 

95 

19.1 

55.0 

519 

14.1 

526 

13.7 

5.01 

2,635 

3.26 

534 

96 

19.1 

53.0 

529 

14.8 

530 

13.6 

4.97 

2,634 

3.20 

548 

102 

19.4 

56.0 

534 

15.5 

521 

12.3 

5.13 

2,673 

3.26 

536 

96 

19.3 

52.0 

524 

15.3 

535 

12.1 

5.33 

2,913 

3.13 

540 

101 

18.9 

55.9 

527 

15.2 

Suburban. 


Commercial. 

Commercial. 

Commercial. 

Commercial. 

B.  T.  U. 

Candle 

Power. 

B.T.  U. 

Candle 

Power. 

B.  T.  U. 

Candle 

Power. 

B.  T.  U. 

Candle 

Power. 

555 

16.5 

534 

14.7 

531 

13.6 

533 

14.5 

548 

14.7 

535 

14.5 

521 

11.9 

534 

14.8 

535 

13.5 

537 

14.7 

524 

12.7 

538 

14.3 

519 

12.8 

540 

14.1 

530 

13.4 

533 

15.0 

521 

13.5 

540 

14.4 

541 

14.5 

537 

15.1 

531 

14.5 

548 

14.6 

524 

14.1 

538 

13.2 

538 

13.8 

525 

13.4 

545 

14.8 

531 

14.4 

529 

13.6 

534 

14.4 

551 

15.4 

538 

14.8 

533 

14.0 

541 

15.5 

539 

14.8 

538 

14.8 

532 

14.8 

548 

14.7 

546 

14.9 

537 

15.9 

537 

13.8 

530 

14.9 

547 

15.2 

532 

14.2 

528 

14.9 

524 

14.3 

539 

15.5 

535 

14.4 

520 

15.0 

528 

15.3 

543 

15.3 

526 

13.5 

531 

15.1 

535 

14.5 

532 

14.9 

535 

- 

534 

14.3 

57 


Taunton. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

623 

14.5 

4.85 

3,021 

- 

- 

- 

- 

- 

- 

- 

620 

15.4 

4.82 

2,990 

- 

- 

- 

- 

- 

- 

- 

613 

14.4 

5.05 

3,093 

- 

- 

- 

- 

- 

- 

- 

598 

13.1 

5.10 

3,050 

- 

- 

- 

- 

- 

- 

- 

619 

14.3 

4.79 

2,964 

- 

- 

- 

- 

- 

- 

- 

616 

14.8 

4.72 

2,908 

- 

- 

- 

- 

- 

- 

- 

605 

13.9 

5.08 

3,073 

- 

- 

- 

- 

- 

- 

- 

609 

13.6 

5.19 

3,161 

- 

- 

- 

- 

- 

- 

- 

616 

13.5 

4.85 

2,988 

- 

- 

- 

- 

- 

- 

- 

603 

13.5 

4.77 

2,878 

- 

- 

- 

- 

- 

- 

- 

602 

13.3 

4.85 

2,923 

- 

- 

- 

- 

- 

- 

615 

13.8 

4.76 

2,926 

- 

- 

- 

- 

- 

- 

613i 

14.51 

4.86 

2,978 

3.09 

- 

- 

- 

4.7 

613 

14.5 

627i 

14.31 

4.92 

3,084 

4.10 

- 

- 

- 

0.9 

627 

14.3 

- 

- 

5.01 

- 

- 

- 

- 

- 

7.4 

598 

13.9 

5731 

13.2i 

5.17 

2,962 

2.92 

- 

- 

- 

2.0 

573 

13.2 

5951 

13. 1» 

4.64 

2,762 

- 

- 

»- 

- 

0.0 

595 

13.1 

603i 

13.4 

4.68 

2,823 

- 

- 

- 

- 

0.0 

603 

13.4 

604i 

12.9 

4.80 

2,899 

- 

- 

- 

- 

0.0 

604 

12.9 

612 

13.4 

4.85 

2,967 

- 

- 

- 

- 

0.0 

612 

13.4 

629 

14.7 

4.85 

3,052 

- 

- 

- 

- 

- 

- 

- 

586 

12.4 

4.71 

2,759 

- 

- 

- 

- 

- 

- 

- 

605 

12.8 

4.67 

2,825 

- 

- 

- 

- 

- 

- 

- 

624 

14.7 

4.78 

2,984 

- 

- 

- 

- 

- 

- 

- 

617 

- 

4.82 

2,974 

- 

- 

- 

- 

- 

- 

- 

618 

13.6 

4.67 

2,885 

- 

- 

- 

- 

- 

- 

- 

616 

14.0 

4.86 

2,994 

- 

- 

- 

- 

- 

- 

- 

625 

13.1 

4.73 

2,958 

- 

- 

- 

- 

- 

- 

- 

605 

13.8 

5.06 

3,059 

- 

- 

- 

- 

- 

- 

- 

623 

14.7 

4.88 

3,042 

- 

- 

- 

- 

- 

- 

635 

14.6 

4.77 

3,027 

- 

- 

- 

- 

- 

- 

_ 

621 

14.5 

5.00 

3,104 

- 

- 

- 

- 

- 

- 

- 

609 

13.5 

5.18 

3,153 

- 

- 

- 

- 

- 

- 

_ 

608 

14.5 

4.99 

3,039 

- 

- 

- 

- 

- 

- 

_ 

601 

14.3 

5.14 

3,087 

- 

- 

- 

- 

- 

- 

- 

1  Returns  of  Btu  and  candle  power  are  for  commercial  gas. 


58 


Taunton  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

612 

15.3 

5.10 

3,122 

- 

- 

- 

- 

- 

- 

- 

621 

14.9 

4.94 

3,070 

- 

- 

- 

- 

- 

- 

- 

618 

15.0 

4.65 

2,876 

- 

- 

- 

- 

- 

- 

- 

620 

15.0 

4.75 

2,943 

- 

- 

- 

- 

- 

- 

- 

602 

13.8 

4.87 

2,932 

- 

- 

- 

- 

- 

- 

- 

599 

13.9 

4.92 

2,948 

- 

- 

- 

- 

- 

- 

- 

579 

13.8 

4.92 

2,847 

- 

- 

- 

- 

- 

- 

- 

611 

13.0 

5.07 

3,097 

- 

- 

- 

- 

- 

- 

- 

594 

12.0 

5.05 

2,999 

- 

- 

- 

- 

- 

- 

- 

610 

13.6 

4.89 

2,980 

- 

- 

- 

- 

- 

- 

- 

Worcester. 


547 

12.9 

5.76 

3,148 

3.27 

606 

117 

19.2 

41.6 

545 

17.0 

563 

13.7 

5.33 

3,001 

3.73 

561 

94 

18.5 

47.0 

555 

16.2 

565 

15.8 

5.39 

3,046 

3.34 

565 

103 

18.6 

50.0 

565 

17.0 

521 

14.2 

5.53 

2,877 

3.70 

573 

98 

19.5 

49.8 

559 

16.7 

559 

14.1 

5.42 

3,027 

3.41 

559 

100 

19.0 

51.8 

568 

16.5 

526 

12.1 

5.46 

2,874 

3.47 

575 

103 

19.8 

50.0 

542 

15.9 

540 

11.9 

5.20 

2,806 

3.67 

650 

119 

20.7 

53.0 

549 

15.9 

577 

12.3 

5.17 

2,992 

4.11 

609 

99 

19.8 

54.2 

566 

17.9 

543 

- 

5.82 

3,163 

3.83 

611 

105 

19.8 

50.6 

562 

16.8 

602 

15.2 

4.97 

2,991 

3.97 

650 

112 

- 

38.2 

589 

17.9 

532 

12.1 

5.57 

2,962 

4.03 

615 

103 

- 

42.7 

526 

17.1 

528 

12.5 

- 

- 

4.11 

- 

- 

- 

39.6 

562 

15.9 

- 

13.5 

5.14 

- 

4.19 

- 

- 

- 

44.9 

584 

16.5 

563 

12.9 

4.78 

2,688 

5.09 

640 

91 

23.4 

52.2 

580 

15.2 

555 

10.6 

5.44 

2,999 

4.47 

645 

101 

23.0 

46.1 

579 

15.2 

534 

10.9 

4.90 

2,615 

4.15 

639 

106 

- 

40.1 

580 

15.3 

- 

- 

5.45 

- 

4.13 

- 

- 

- 

46.0 

551 

15.6 

586 

11.1 

5.27 

- 

4.46 

671 

107 

- 

45.5 

575 

15.5 

523 

10.9 

5.32 

2,781 

4.11 

622 

103 

- 

50.7 

561 

14.7 

499 

10.1 

5.89 

2,695 

3.79 

609 

106 

24.1 

49.0 

542 

14.6 

474 

9.4 

5.73 

2,713 

4.35 

616 

97 

24.1 

49.1 

533 

14.4 

524 

11.4 

4.93 

2,591 

4.60 

640 

98 

23.3 

48.0 

573 

15.6 

444 

10.5 

5.16 

2,293 

4.12 

620 

102 

23.3 

49.1 

538 

15.4 

413 

10.9 

5.14 

2,122 

4.00 

608 

110 

24.0 

42.6 

537 

13.4 

59 


Worcester  —  Concluded. 


Coal. 

Water. 

Commercial. 

B.T.U. 

Candle 

Power. 

Yield. 

B.T.U. 

Feet. 

Gals. 

B.T.U. 

Factor. 

Candle 

Power. 

Per 

Cent. 

H20. 

B.T.U. 

Candle 

Power. 

523 

11.2 

5.09 

2,662 

4.21 

632 

103 

23.8 

37.1 

561 

15.2 

524 

9.1 

4.89 

2,721 

4.36 

632 

100 

22.5 

43.7 

555 

14.9 

594 

12.4 

4.74 

2,817 

3.85 

628 

109 

21.6 

42.7 

580 

16.0 

510 

11.5 

4.39 

2,241 

3.70 

626 

112 

21.1 

48.0 

556 

15.9 

519 

9.3 

5.02 

2,608 

4.19 

644 

106 

19.2 

38.2 

552 

14.7 

488 

12.5 

5.05 

2,463 

3.84 

618 

107 

23.8 

29.6 

552 

15.0 

537 

11.5 

4.92 

2,642 

4.04 

611 

101 

22.3 

38.4 

561 

15.3 

479 

12.3 

4.85 

2,323 

3.74 

613 

108 

23.6 

34.2 

561 

14.9 

508 

10.1 

4.97 

2,524 

3.90 

620 

106 

23.2 

31.0 

561 

14.4 

545 

12.2 

4.65 

2,536 

3.85 

627 

109 

24.6 

39.7 

563 

14.9 

541 

12.1 

5.11 

2,764 

3.96 

632 

108 

27.1 

33.2 

561 

14.4 

•531 

11.9 

5.11 

2,714 

4.42 

615 

95 

23.7 

29.8 

549 

13.9 

521 

12.4 

5.17 

2,693 

4.09 

617 

102 

22.8 

37.5 

567 

13.9 

584 

14.4 

5.69 

3,320 

3.15 

595 

118 

22.2 

60.2 

560 

16.1 

507 

13.4 

5.69 

2,886 

3.04 

522 

97 

20.0 

59.2 

539 

14.9 

580 

12.9 

5.66 

3,281 

3.00 

570 

114 

19.2 

64.5 

555 

15.1 

546 

12.7 

5.70 

3,214 

2.75 

542 

112 

17.3 

56.9 

551 

15.5 

559 

12.2 

5.59 

3,125 

2.54 

524 

112 

15.9 

65.3 

536 

15.3 

561 

11.8 

5-.  60 

3,139 

2.90 

535 

105 

15.6 

57.3 

537 

14.1 

561 

12.2 

5.79 

3,245 

2.70 

515 

104 

15.4 

61.6 

530 

15.3 

566 

12.1 

5.70 

3,226 

3.05 

556 

105 

16.1 

55.3 

539 

15.6 

545 

12.8 

5.54 

3,016, 

2.81 

538 

107 

17.7 

57.7 

543 

15.1 

549 

12.2 

5.52 

3,029 

2.84 

533 

106 

19.1 

54.7 

540 

12.5 

561 

12.6 

5.51 

3,092 

2.34 

498 

110 

13.4 

33.6 

559 

14.7 

567 

12.5 

5.53 

3,135 

2.37 

481 

100 

8.6 

39.9 

535 

14.4 

573 

14.1 

5.45 

3,107 

1.88 

479 

122 

9.9 

38.0 

536 

14.4 

559 

11.8 

5.46 

3,054 

2.95 

495 

90 

13.8 

36.0 

536 

14.4 

556 

12.2 

5.42 

3,015 

2.47 

495 

103 

10.4 

37.2 

540 

13.3 

521 

12.2 

5.45 

2,842 

2.69 

505 

100 

13.7 

42.9 

535 

12.9 

551 

12.9 

5.52 

3,042 

2.56 

489 

98 

12.3 

41.1 

538 

12.4 

559 

10.4 

5.34 

2,986 

2.62 

494 

109 

11.2 

41.9 

553 

14.4 

561 

10.6 

5.51 

3,093 

2.52 

493 

101 

10.8 

47.9 

539 

12.6 

541 

10.1 

5.59 

3,026 

3.15 

532 

98 

16.0 

50.8 

540 

14.1 

571 

10.5 

5.57 

3,178 

3.19 

546 

101 

- 

49.2 

557 

14.9 

555 

9.2 

5.57 

3,089 

2.87 

528 

104 

15.4 

48.5 

543 

15.0 

571 

9.8 

5.54 

3,165 

2.94 

545 

107 

15.4 

52.1 

550 

14.9 

540 

11.9 

5.32 

2,882 

3.52 

579 

104 

16.0 

46.1 

553 

15.0 

60 


State  Inspections. 


State  Tests. 


Companies’  Tests  for  Week,  including 
Date  of  State  Test. 


Company. 


Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Attleboro,  .... 

Oct. 

25 

603 

605 

- 

- 

- 

Nov. 

15 

619 

607 

627 

590 

- 

Dec. 

5 

612 

611 

- 

- 

- 

Dec. 

27 

609 

611 

- 

- 

- 

Jan. 

16 

613 

607 

617 

598 

- 

Feb. 

20 

605 

604 

616 

597 

- 

Mar. 

21 

629 

626 

632 

617 

- 

Apr. 

24 

616 

621 

633 

609 

- 

Aug. 

2 

630 

622 

631 

597 

- 

Boston,  .... 

Aug. 

1 

602 

595 

- 

- 

590 

Aug. 

7 

586 

581 

- 

- 

588 

Aug. 

16 

584 

585 

- 

- 

592 

Aug. 

23 

592 

582 

593 

571 

576 

Aug. 

30 

561 

564 

- 

- 

565 

Sept. 

20 

563 

564 

- 

- 

558 

Sept. 

26 

569 

576 

585 

569 

559 

Oct. 

13 

565 

576 

592 

564 

558 

Oct. 

27 

577 

583 

- 

573 

Nov. 

4 

587 

584 

- 

- 

.578 

Nov. 

21 

595 

595 

- 

- 

590 

Dec. 

5 

596 

594 

- 

- 

580 

Dec. 

21 

585 

584 

- 

- 

582 

Jan. 

9 

574 

572 

581 

558 

566 

Jan. 

18 

581 

581 

590 

574 

570 

Feb. 

1 

573 

573 

581 

559 

566 

Mar. 

3 

570 

572 

576 

566 

575 

Mar. 

18 

578 

578 

584 

571 

576 

Mar. 

25 

566 

568 

572 

564 

575 

Apr. 

18 

591 

582 

585 

579 

575 

Apr. 

25 

583 

'  584 

593 

575 

581 

May 

1 

585 

589 

599 

583 

592 

May 

15 

619 

586 

597 

576 

580 

June 

12 

583 

589 

596 

582 

587 

June 

27 

597 

593 

597 

586 

597 

July 

6 

600 

599 

602 

595 

595 

61 


State  Inspections  —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  fob  Week,  including 
Date  of  State  Test.  • 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Boston — Con.  . 

July  25 

590 

589 

598 

583 

584 

Aug.  17 

569 

571 

576 

568 

569 

Sept.  14 

559 

559 

568 

554 

558 

Sept.  21 

570 

564 

571 

556 

564 

Brockton,  .... 

Aug.  31 

558 

567 

591 

556 

- 

Sept.  21 

563 

565 

- 

- 

570 

Oct.  11 

547 

553 

- 

- 

567 

Nov.  1 

549 

555 

561 

547 

569 

Nov.  10 

560 

553 

- 

- 

575 

Nov.  28 

553 

559 

- 

- 

577 

Dec.  15 

553 

559 

- 

- 

573 

Jan.  23 

543 

542 

545 

538 

558 

Feb.  27 

555 

548 

555 

543 

565 

Mar.  28 

567 

565 

571 

554 

582 

Apr.  25 

553 

551 

556 

546 

571 

July  5 

550 

550 

554 

546 

569 

July  31 

550 

550 

555 

542 

577 

Cambridge, 

Aug.  5 

567 

570 

- 

- 

576 

Aug.  11 

560 

566 

588 

560 

572 

Aug.  16 

561 

555 

- 

- 

560 

Sept.  16 

552 

558 

- 

- 

560 

Sept.  22 

560 

559 

- 

- 

568 

Oct.  11 

554 

556 

- 

- 

561 

Nov.  1 

569 

569 

- 

- 

566 

Nov.  11 

582 

577 

- 

- 

577 

Nov.  17 

583 

581 

- 

- 

577 

Nov.  23 

576 

587 

591 

581 

591 

Dec.  6 

596 

592 

- 

- 

590 

Dec.  30 

579 

575 

- 

- 

577 

Jan.  5 

572 

579 

584 

574 

577 

Jan.  20 

575 

576 

587 

568 

570 

Feb.  6 

567 

574 

577 

570 

578 

Mar.  13 

578 

572 

578 

564 

568 

Apr.  20 

577 

569 

577 

563 

564 

July  28 

553 

562 

563 

560 

564 

Sept.  28 

558 

556 

558 

552 

557 

62 


Company. 


Charlestown, 


East  Boston, 


Fall  River, 


State  Inspections  —  Continued. 


State  Tests. 

Companies’  Tests  for  Week,  including 
Date  of  State  Test. 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Feb.  27 

571 

612 

- 

- 

- 

Mar.  6 

630 

617 

- 

- 

- 

Apr.  7 

613 

619 

- 

- 

- 

Apr.  17 

611 

621 

- 

- 

- 

May  1 

602 

615 

- 

- 

- 

June  13 

600 

606 

- 

- 

- 

Sept.  29 

609 

609 

615 

602 

- 

Oct,  30 

559 

548 

562 

532 

- 

Nov.  8 

539 

548 

556 

528 

- 

Nov.  14 

535 

542 

- 

- 

- 

Dec.  1 

537 

534 

- 

- 

- 

Dec.  21 

546 

535 

550 

524 

- 

Jan.  5 

527 

542 

571 

526 

- 

Jan.  24 

530 

527 

532 

519 

- 

Feb.  17 

526 

526 

539 

513 

- 

Mar.  25 

543 

536 

545 

524 

- 

Apr.  18 

519 

527 

537 

521 

- 

Apr.  26 

510 

515 

534 

508 

- 

June  12 

520 

523 

580 

486 

- 

June  25 

499 

- 

- 

- 

- 

July  7 

532 

534 

544 

522 

- 

July  25 

526 

543 

558 

526 

- 

Sept.  14 

522 

529 

536 

522 

- 

July  31 

570 

548 

558 

538 

561 

Aug.  11 

556 

554 

- 

- 

552 

Sept.  21 

548 

553 

- 

- 

555 

Oct.  18 

549 

560 

569 

545 

557 

Oct.  31 

574 

563 

566 

557 

554 

Nov.  10 

557 

556 

- 

- 

556 

Nov.  16 

570 

562 

570 

558 

554 

Nov.  29 

567 

556 

565 

549 

553 

Dec.  15 

545 

547 

- 

- 

548 

Dec.  29 

557 

554 

- 

- 

548 

Jan.  12 

566 

559 

565 

550 

555 

Jan.  23 

568 

560 

566 

554 

556 

63 


State  Inspections  —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  for  Week,  : 

Date  of  State  Test. 

INCLUDING 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Fall  River  —  Con. 

Feb.  7 

562 

561 

569 

551 

564 

Feb.  23 

566 

563 

566 

557 

565 

Mar.  20 

555 

548 

553 

541 

438 

Mar.  28 

561 

552 

561 

546 

539 

May  2 

540 

535 

542 

522 

- 

July  11 

551 

557 

562 

546 

542 

Sept.  26 

540 

542 

556 

532 

536 

Fitchburg, 

Aug.  7 

571 

551 

582 

522 

539 

Aug.  23 

559 

532 

542 

523 

547 

Sept.  16 

540 

550 

565 

530 

560 

Oct.  10 

522 

536 

546 

523 

534 

Oct.  16 

519 

532 

541 

523 

533 

Nov.  7 

538 

531 

- 

- 

532 

Nov.  22 

565 

558 

572 

533 

571 

Dec.  13 

566 

564 

- 

- 

568 

Dec.  21 

563 

561 

- 

- 

577 

Jan.  26 

568 

553 

567 

547 

561 

Feb.  13 

560 

561 

573 

551 

555 

Apr.  17 

550 

549 

556 

538 

542 

June  9 

537 

540 

547 

523 

540 

Aug.  8 

552 

548 

559 

536 

545 

Haverhill,  .... 

Aug.  18 

564 

559 

573 

550 

- 

Sept.  15 

549 

547 

- 

- 

- 

Sept.  27 

567 

551 

557 

541 

- 

Oct.  23 

562 

559 

- 

- 

- 

Nov.  9 

570 

565 

- 

- 

557 

Nov.  23 

566 

563 

- 

- 

554 

Dec.  28 

557 

555 

- 

- 

536 

Jan.  25 

549 

546 

554 

534 

546 

Mar.  2 

558 

551 

559 

545 

544 

Mar.  14 

548 

547 

554 

538 

- 

Apr.  26 

555 

552 

554 

546 

- 

July  27 

540 

535 

544 

530 

- 

Sept.  13 

543 

_i 

- 

- 

- 

1  No  tests  made. 


64 


State  Inspections  • —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  for  Week,  including 
Date  of  State  Test. 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Holyoke . 

Aug.  11 

545 

571 

598 

552 

- 

Aug.  17 

578 

579 

- 

- 

- 

Aug.  24 

600 

- 

- 

- 

- 

Sept.  19 

608 

- 

- 

- 

- 

Nov.  16 

577 

- 

- 

- 

- 

Dec.  6 

565 

581 

605 

568 

- 

Dec.  30 

577 

- 

- 

- 

- 

Jan.  12 

568- 

- 

623 1 

586 1 

601 

May  17 

560 

544 

560 

501 

560 

June  8 

556 

577 

600 

549 

591 

Aug.  30 

580 

577 

576 

566 

- 

Lowell,  .... 

Sept.  15 

589 

588 

- 

- 

589 

Oct.  23 

594 

595 

- 

- 

597 

Nov.  7 

595 

600 

602 

598 

602 

Nov.  22 

570 

604 

607 

602 

603 

Dec.  12 

579 

583 

- 

- 

575 

Dec.  29 

556 

579 

583 

581 

577 

Jan.  19 

588 

588 

591 

586 

585 

Jan.  30 

582 

577 

585 

569 

580 

Mar.  2 

568 

573 

578 

568 

570 

Apr.  24 

580 

585 

588 

583 

571 

June  15 

575 

586 

590 

582 

571 

July  24 

593 

594 

610 

583 

586 

Aug.  30 

583 

582 

582 

578 

- 

Sept.  11 

574 

573 

573 

573 

573 

Lynn,  .... 

Sept.  8 

577 

578 

- 

- 

575 

Sept.  19 

570 

565 

575 

556 

550 

Sept.  27 

569 

566 

- 

- 

567 

Oct.  3 

567 

- 

- 

- 

560 

Oct.  17 

550 

549 

- 

- 

547 

Oct.  31 

544 

549 

572 

537 

544 

Nov.  14 

562 

566 

577 

561 

573 

Dec.  1 

577 

564 

572 

560 

574 

Dec.  28 

571 

560 

566 

544 

574 

1  Taken  at  works  station. 


65 


State  Inspections  —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  for  Week,  including 
Date  of  State  Test. 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Lynn — Con. 

Jan.  10 

560 

553 

557 

548 

570 

Jan.  31 

571 

560 

562 

558 

565 

Mar.  1 

560 

550 

560 

537 

559 

Mar.  14 

570 

568 

573 

560 

573 

Apr.  17 

550 

557 

560 

552 

558 

May  3 

555 

552 

556 

.  548 

554 

June  13 

539 

536  J 

538 

535 

541 

July  26 

545 

540 

544 

536 

535 

Sept.  21 

547 

539 

542 

533 

546 

Malden,  .... 

Aug.  18 

557 

- 

- 

- 

560 

Aug.  24 

542 

- 

- 

- 

564 

Sept.  9 

535 

- 

- 

- 

544 

Sept.  20 

526 

533 

542 

519 

534 

Oct.  3 

528 

533 

- 

-  ' 

532 

Oct.  5 

537 

545 

561 

537 

532 

Oct.  30 

544 

546 

- 

- 

543 

Nov.  14 

552 

547 

553 

544 

540 

Nov.  23 

534 

538 

- 

- 

536 

Dec.  21 

534 

542 

561 

533 

540 

Jan.  9 

557 

548 

551 

539 

544 

Mar.  2 

539 

531 

541 

519 

536 

Mar.  24 

546 

543 

550 

532 

550 

Apr.  20 

538 

531 

539 

516 

530 

May  5 

541 

544 

553 

534 

544 

July  27 

537 

533 

537 

530 

535 

Aug.  31 

529 

532 

546 

526 

531 

New  Bedford,  . 

Aug.  16 

590 

578 

591 

565 

597 

Aug.  25 

567 

560 

568 

552 

578 

Sept.  22 

568 

558 

570 

547 

587 

Oct.  25 

567 

569 

- 

- 

- 

Oct.  31 

551 

554 

- 

- 

- 

Nov.  16 

565 

556 

563 

546 

- 

Nov.  29 

576 

570 

578 

557 

576 

Dec.  14 

586 

590 

594 

571 

596 

Dec.  29 

573 

578 

- 

- 

589 

66 


State  Inspections  —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  for  Week, 
Date  of  State  Test. 

INCLUDING 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

New  Bedford  —  Con.. 

Jan.  12 

533 

552 

577 

534 

561 

Jan.  25 

568 

560 

565 

551 

570 

Feb.  25 

569 

563 

574 

552 

566 

Mar.  20 

571 

565 

567 

563 

570 

May  2 

543 

544 

558 

535 

558 

July  11 

543 

565 

578 

558 

570 

Sept.  26 

545 

552 

562 

542 

551 

Old  Colony, 

July  29 

567 

557 

563 

536 

- 

Aug.  9 

547 

544 

- 

- 

- 

Sept.  9 

536 

528 

538 

518 

- 

Sept.  13 

551 

530 

544 

516 

- 

Oct.  13 

509 

509 

- 

- 

- 

Oct.  24 

515 

518 

- 

- 

- 

Nov.  16 

523 

534 

- 

517 

- 

Nov.  28 

519 

530 

543 

518 

- 

Dec.  29 

521 

529 

529 

514 

- 

Jan.  10 

528 

- 

538 

515 

527 

Mar.  13 

524 

- 

- 

- 

526 

Sept.  6 

513 

514 

525 

507 

- 

Springfield, 

Aug.  16 

548 

550 

- 

- 

555 

Aug.  25 

538 

530 

- 

- 

559 

Sept.  20 

517 

520 

- 

- 

538 

Oct.  18 

536 

519 

521 

516 

533 

Nov.  17 

524 

515 

516 

514 

531 

Dec.  7 

521 

522 

- 

- 

524 

Dec.  29 

523 

- 

- 

- 

- 

Jan.  23 

535 

526 

531 

514 

531 

Feb.  23 

530 

528 

539 

521 

543 

Mar.  8 

522 

524 

532 

515 

545 

Mar.  16 

519 

521 

528 

515 

534 

Mar.  23 

523 

518 

527 

510 

524 

Apr.  18 

532 

520 

523 

518 

520 

Apr.  25 

534 

- 

- 

- 

- 

May  17 

522 

528 

537 

520 

522 

June  8 

534 

529 

534 

519 

524 

67 


State  Inspections  —  Continued. 


Company. 

State  Tests. 

Companies’  Tests  for  Week,  including 
Date  of  State  Test. 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Springfield  —  Con. 

July  19 

546 

537 

540 

531 

535 

Aug.  10 

524 

530 

562 

512 

545 

Sept.  5 

501 

515 

526 

504 

519 

Suburban, 

Aug.  30 

553 

555 

- 

- 

- 

Sept.  19 

526 

519 

529 

514 

- 

Oct.  17 

532 

538 

- 

- 

- 

Nov.  21 

529 

528 

- 

- 

- 

Jan.  18 

545 

540 

544 

534 

- 

Mar.  23 

541 

531 

541 

524 

- 

Sept.  28 

529 

532 

537 

528 

- 

Taunton,  .... 

Stept.  22 

619 

- 

- 

- 

- 

Oct.  18 

617 

620 

- 

- 

- 

Oct.  25 

616 

613 

- 

- 

- 

Nov.  28 

609 

609 

- 

- 

- 

Dec.  27 

625 

615 

621 

605 

- 

Feb.  27 

607 

595 

'  605 

583 

- 

Mar.  4 

607 

595 

605 

583 

- 

Apr.  25 

654 

624 

649 

615 

- 

July  5 

642 

608 

622 

598 

- 

Aug.  3 

627 

618 

633 

603 

- 

Sept.  18 

625 

611 

623 

597 

- 

Worcester,  .... 

July  21 

563 

- 

- 

- 

- 

Aug.  2 

552 

545 

555 

531 

545 

Aug.  11 

551 

555 

- 

- 

575 

Aug.  16 

567 

565 

- 

- 

584 

Aug.  25 

559 

559 

- 

- 

569 

Sept.  20 

564 

- 

- 

- 

- 

Oct.  10 

606 

589 

623 

550 

617 

Oct.  27 

577 

562 

578 

509 

575 

Nov.  3 

541 

584 

598 

568 

- 

Nov.  17 

588 

575 

588 

557 

589 

Dec.  14 

548 

561 

591 

543 

571 

Dec.  29 

529 

533 

- 

- 

548 

Jan.  11 

539 

538 

548 

531 

548 

Jan.  23 

567 

561 

573 

555 

571 

68 


State  Inspections  —  Concluded. 


Company. 

State  Tests. 

Companies’  Tests  for  Week,  including 
Date  of  State  Test. 

Date. 

B.  T.  U. 

Test 

Station, 

Average. 

Maxi¬ 

mum. 

Mini¬ 

mum. 

Works, 

Average. 

Worcester — Con. 

Feb.  25 

520 

552 

579 

523 

558 

Mar.  16 

552 

554 

.  567 

546 

561 

Apr.  23 

574 

560 

582 

542 

575 

May  4 

544 

539 

548 

529 

540 

May  17 

555 

551 

559 

543 

554 

June  21 

545 

539 

555 

525 

557 

July  19 

541 

540 

547 

- 

536 

Sept.  5 

528 

537 

547 

526 

540 

Sept.  10 

565 

550 

560 

543 

557 

Sept.  18 

550 

547 

558 

542 

543 

70 


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Appendix  H. 


Burner  Tests. 

The  following  are  tables,  with  their  averages,  showing  varia¬ 
tions'  in  open  burner  candle  powers  compared  with  results  ob¬ 
tained  in  official  tests  with  Suggs’  Argand  burners  of  suitable 
size  (D,  E  and  F)  and  appropriate  chimney  (If"  x  6"  and  If"  x 
7"):— 

Table  A.  —  Water  Gas,  1910. 


Argand. 

Open. 

Argand. 

Open. 

Argand. 

Open. 

20.82 

20.28 

21.40 

21.30 

20.27 

20.66 

20.40 

20.82 

20.66 

21.55 

19.30 

17.21 

18.30 

13.66 

20.55 

20.47 

17.60 

15.40 

20.89 

23.23 

20.44 

16.61 

14.61 

10.53 

20.48 

19.15 

19.72 

19.64 

20.94 

20.25 

18.33 

17.84 

20.10 

17.98 

20.65 

19.34 

20.80 

19.40 

19.95 

19.78 

20.74 

19.02 

19.59 

18.58 

20.70 

18.80 

19.84 

19.51 

Table  B.  —  Water  Gas,  1912. 


19.58 

22.20 

18.97 

20.41 

20.46 

20.82 

20.22 

22.02 

18.94 

22.52 

19.03 

23.68 

20.63 

20.71 

21.92 

22.01 

19.83 

20.15 

19.47 

19.81 

20.10 

23.40 

20.06 

21.76 

19.89 

21.50 

21.75 

23.66 

Table  C.  —  Water  Gas,  1912. 


20.51 

18.55 

20.81 

19.18 

18.05 

16.34 

23.16 

16.45 

18.00 

17.40 

20.17 

19.55 

22.16 

21.64 

18.50 

17.31 

24.36 

22.14 

19.67 

17.90 

20.42 

18.77 

19.26 

19.03 

21.56 

19.52 

20.31 

19.12 

20.42 

18.64 

21.74 

20.33 

20.17 

16.43 

19.73 

19.03 

18.99 

16.75 

75 


Table  D.  —  Coal  Gas,  1910. 


Argand. 

Open. 

Argand. 

Open. 

Argand. 

Open. 

17.09 

16.24 

14.50 

11.54 

16.94 

13.28 

17.42 

16.75 

16.09 

14.50 

16.10 

13.50 

16.54 

13.16 

16.88 

16.01 

15.90 

14.00 

16.49 

12.19  • 

16.21 

15.64 

16.63 

15.31 

17.21 

15.14 

17.08 

16.25 

17.35 

14.40 

16.90 

15.20 

17.13 

15.13 

16.68 

16.21 

16.27 

13.52 

17.36 

15.18 

17.11 

15.76 

15.86 

14.99 

16.76 

15.47 

16.39 

14.18 

16.69 

13.09 

17.03 

16.43 

16.71 

14.56 

16.78 

15.20 

17.18 

15.29 

16.43 

14.89 

Table  E.  —  Coal  Gas,  1912. 


16.91 

14.80 

16.66 

14.77 

17.47 

13.27 

17.12 

16.20 

16.60 

15.82 

16.79, 

13.32 

16.77 

15.13 

16.14 

13.90 

16.76 

14.53 

15.86 

14.74 

17.26 

13.33 

Table  F.  —  Mixed  Gas,  1910. 


17.90 

15.61 

18.62 

16.98 

18.70 

17.41 

17.43 

16.06 

17.10 

17.60 

19.01 

19.35 

18.10 

16.60 

18.51 

17.03 

19.10 

18.56 

17.09 

16.35 

16.58 

17.00 

18.43 

15.09 

18.33 

15.87 

17.11 

17.83 

19.17 

18.59 

18.00 

15.78 

17.16 

16.80 

18.30 

15.90 

17.18 

14.87 

18.32 

16.80 

17.77 

14.60 

18.32 

19.22 

18.27 

16.79 

16.39 

13.69 

17.10 

13.10 

16.61 

16.92 

16.11 

11.65 

17.65 

16.84 

17.64 

15.50 

16.19 

13.97 

18.10 

16.60 

17.60 

14.50 

18.80 

18.60 

17.69 

15.08 

18.20 

16.31 

17.20 

14.26 

17.62 

17.29 

18.02 

16.86 

17.98 

16.03 

17.78 

16.64 

17.70 

16.40 

18.20 

15.56 

18.10 

17.31 

16.66 

15.92 

17.87 

18.00 

18.62 

15.58 

17.88 

17.32 

17.90 

17.00 

17.76 

14.40 

16.83 

12.82 

17.85 

16.35 

17.44 

16.23 

19.06 

18.26 

18.19 

15.22 

19.13 

18.87 

76 


Table  G.  —  Mixed  Gas,  1912. 


Argand. 

Open. 

Argand. 

Open. 

Argand. 

Open. 

17.43 

16.43 

18.63 

16.62 

16.22 

12.51 

18.17 

17.63 

18.53 

16.49 

16.24 

13.24 

16.62 

15.82 

16.19 

12.10 

17.83 

16.10 

16.37 

15.55 

19.65 

18.68 

•  17.45 

14.31 

17.24 

17.07 

17.14 

15.41 

18.05 

18.02 

18.40 

17.13 

19.70 

17.09 

18.43 

18.24 

18.03 

16.03 

18.24 

14.07 

17.75 

15.68 

18.31 

16.25 

17.43 

13.09 

Table  H 

.  — Plants  not  under  Heat  Unit  Basis  for  Year  ending  1916. 

Coal  Gas. 

Water  Gas. 

Mixed  Gas. 

Argand. 

Open. 

Argand. 

Open. 

Argand. 

Open. 

16.4 

13.3 

16.9 

8.5 

17.8 

14.1 

16.5 

11.2 

18.2 

10.8 

16.3 

10.7 

14.8 

11.1 

16.1 

8.8 

16.6 

9.8 

16.4 

14.5 

14.5 

8.4 

16.5 

13.9 

16.5 

13.4 

17.5 

11.1 

16.0 

13.2 

16.8 

10.5 

16.9 

12.0 

18.2 

12.4 

16.6 

10.5 

16.9 

10.4 

18.3 

10.9 

15.6 

12.9 

16.5 

9.3 

16.2 

11.8 

15.2 

11.1 

15.2 

8.5 

16.2 

9.2 

16.2 

14.2 

18.8 

9.9 

16.1 

11.8 

.  16.10 

12.27 

16.1 

8.0 

16.6 

14.4 

16.1 

8.1 

17.2 

14.9 

16.8 

9.48 

16.83 

12.25 

Table  I.  —  Plants  under  Heat  Unit  Basis ,  1916. 


Water  Gas. 

Coal  Gas. 

B.T.  U. 

Argand. 

Open. 

b.  t.  u. 

Argand. 

Open. 

522.6 

14.5 

7.9 

609.3 

13.8 

9.2 

518.8 

12.5 

5.3 

612.0 

16.3 

13.1 

566.3 

16.4 

12.1 

603.4 

16.4 

11.8 

535.9 

14.47 

8.43 

608.2 

15.50 

11.37 

77 


Table  I  —  Concluded. 


Mixed  Gas. 

Mixed  Gas. 

B.  T.  TJ. 

Argand. 

Open. 

B.  T.  U. 

Argand. 

Open. 

596.2 

17.2 

10.6 

566.0 

14.5 

8.9 

553.2 

13.7 

8.1 

577.1 

16.0 

13.8 

553.0 

12.4 

7.9 

565.0 

15.4 

12.8 

581.9 

15.2 

10.3 

579.0 

14.7 

11.5 

582.5 

15.1 

13.4 

569.8 

15.9 

13.0 

576.2 

15.6 

11.1 

551.9 

15.0 

8.6 

596.1 

16.7 

12.4 

534.1 

14.4 

8.8 

535.1 

14.3 

7.1 

585.8 

18.9 

9.7 

570.4 

14.5 

8.2 

524.1 

13.5 

7.0 

567.0 

14.2 

10.0 

520.8 

15.7 

10.6 

545.0 

14.1 

8.8 

588.0 

16.5 

11.3 

556.9 

14.6 

9.5 

548.0 

14.5 

10.0 

565.3 

14.3 

9.7 

563.9 

15.08 

10.12 

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